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Wheeler Manual Firearms Accurizing Torque Wrench with Inch/Pounds Measurement, Bits and Storage Case for Scope Mounting, Gunsmithing and Maintenance
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Purchase options and add-ons
Color | Black, Yellow |
Brand | Wheeler |
Material | Plastic |
Item Length | 7.5 Inches |
Item Weight | 0.5 Pounds |
About this item
- ACCURACY: +/- 2 inch/pounds up to 40 inch/pounds; 40 – 65 is +/- 5%. The FAT wrench measures 2 L x 2 W x 6.25 H inches and the storage case measures 7.5 L x 5.5 W x 1.75 H inches
- EASE OF USE: Apply, repeatable, accurate torque settings to scope rings, guard screws, windage screws and base screws, which aids in accuracy and decreases the opportunity for problems in the field
- RELIABLE: Torque adjustment range from 10 inch/pounds to 65 inch/pounds
- DURABLE: Bits are made of S2 tool steel and hardened to 56-58 Rockwell “C”
- INCLUDES: 10 bits (hex to square adapter, #10 flat blade, #32 flat blade, #11 flat blade, 5/32 hex, 7/64 hex, 3/32 hex, T20 torx, T15 torx and Leupold specialty flat blade), ¼” socket and a convenient plastic storage case
- LONGTERM USE: Always return to the lowest inch/pound setting after use
- GUARANTEED: This product is covered by a limited lifetime warranty provided by Wheeler. Please contact Wheeler customer service for assistance
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Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byThe ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification NumberMQC6M6 - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number7V333Z - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Packaging efficiencyReduced air and/or water in the product or packaging for more efficient transportation.As certified byCompact by Design (Amazon-developed Certification)
Compact by Design identifies products that, while they may not always look very different, have a more efficient design. By reducing water and/or air in the product or packaging, these become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Packaging efficiencyReduced air and/or water in the product or packaging for more efficient transportation.As certified byCompact by Design (Amazon-developed Certification)
Compact by Design identifies products that, while they may not always look very different, have a more efficient design. By reducing water and/or air in the product or packaging, these become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byCarbonfree Certified
Carbonfree Certified by ClimeCo certifies consumer products based on a cradle-to-grave assessment to determine the carbon footprint of the product and associated carbon emission reductions. The carbon emissions associated with the product are reduced where possible, and remaining carbon emissions are offset with third-party verified carbon reduction projects in renewable energy, energy efficiency and forestry. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Packaging efficiencyReduced air and/or water in the product or packaging for more efficient transportation.As certified byCompact by Design (Amazon-developed Certification)
Compact by Design identifies products that, while they may not always look very different, have a more efficient design. By reducing water and/or air in the product or packaging, these become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions.
Top Brand: Wheeler
From the brand

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For over two decades, WHEELER has consistently provided rugged, high-quality tools and accessories that the pros use, to build and maintain firearms. Each product reflects our history of innovation, ensuring that our tools will last a lifetime. We are known for our unwavering commitment to providing tools that are MADE TO BUILD AND BUILT TO LAST.
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F.A.T. Stix
Forged from solid steel, these limiters precisely apply the exact amount of torque for any project.
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GUNSMITHING TOOLS
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GUNSMITHING TOOLS
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SCOPE MOUNTING
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SCOPE MOUNTING
From the manufacturer



Engineered to Fit the Job
Wheeler is unapologetically rooted in the legacy of gunsmithing. Building off that heritage, we engineer ruggedly elegant tools for all your passions.
Manual Firearms Accurizing Torque (FAT) Wrench
The Wheeler Engineering FAT Wrench is an essential tool for gunsmiths and firearms enthusiasts. From installing a scope to making adjustments, this reliable tool saves time and accurately torques screws to spec. The FAT Wrench features a standard 1/4" hex drive tip and can be used to apply torque from 10 to 65 in-lbs at 5 in-lbs increments. With proper care and use, the FAT Wrench will provide you with a lifetime of reliable service.
- Align the marker with the center of the desired torque value
- Designed for +/- 2 in-lbs accuracy up to 40 in-lbs, +/- 5% over 40 in-lbs
- Can be used to apply torque to any fastener, it is not limited to firearms and firearm accessories
- Includes 9 bits and a square drive adapter
- Compatible with bits from the Wheeler 72-Piece and 89-Piece Screwdriver Sets
- Always protect the area surrounding the screw with masking tape to prevent marring of metal and wood finishes, just in case a bit slips out while tightening
- Functions like a screwdriver, it is not a ratcheting device
Features
Easy Adjustments
Simply set the FAT Wrench to the desired torque by centering the marker on the desired torque value and use the device to tighten scope rings. Once you hear a click, the torque has been met.
Includes:
- Storage case
- Leupold/Buehler windage bit
- #10, #11, and #32 flat blade bits
- 3/32", 7/64", 5/32" Allen bits
- T15, T20 Torx bits
- Square drive adapter bit
Ergonomic Grip
The FAT Wrench has a comfortable handle to ensure a solid grip.

Product Description
The Wheeler Manual F.A.T. Wrench brings perfect consistency to every screw on your firearm. This handheld torque wrench lets you apply repeatable, accurate torque settings to scope rings, guard screws and other screws. Overall, the torque wrench aids in accuracy and decreases the opportunity for problems in the field. The manual FAT wrench is compatible with bits from Wheeler Engineering's Deluxe Gunsmithing Screwdriver Sets. Together, they can ensure accurate tightening of most every screw on any gun in your collection.
Product information
Technical Details
Color | Black, Yellow |
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Brand | Wheeler |
Material | Plastic |
Item Length | 7.5 Inches |
Item Weight | 0.5 Pounds |
Item Package Quantity | 1 |
Head Style | Hex |
Finish Type | Polished |
Item Torque | 5 Inch Pounds |
Operation Mode | Manual |
Voltage | 1 Millivolts |
Manufacturer | Wheeler |
UPC | 661120535560 |
Global Trade Identification Number | 00661120535560 |
Item Package Dimensions L x W x H | 8.27 x 5.71 x 2.44 inches |
Package Weight | 0.65 Kilograms |
Item Dimensions LxWxH | 3.23 x 6.06 x 3.07 inches |
Brand Name | Wheeler |
Model Name | FAT Wrench |
Suggested Users | Unisex-Adult |
Number of Items | 1 |
Part Number | 553556 |
Style | Torque Wrench |
Included Components | Wrench, Carry Case, 10 Bit Set |
Size | One size |
Sport Type | Hunting |
Additional Information
ASIN | B0012AXR4S |
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Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank |
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Wheeler Manual Firearms Accurizing Torque Wrench with Inch/Pounds Measurement, Bits and Storage Case for Scope Mounting, Gunsmithing and Maintenance
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Important information
Legal Disclaimer
Cannot ship out of US
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the torque wrench works well and is easy to use, particularly for mounting scopes on rifles and gunsmithing tasks. They appreciate its build quality, accuracy, and value for money. The tool provides correct torque on everything and comes with plenty of bits, though opinions about the bit selection are mixed.
AI Generated from the text of customer reviews
Customers find that the wrench works well and is a quality tool, with one customer noting it's particularly good for fine work.
"It's good. I trust it. Very good quality tool to have around." Read more
"The driver itself works great. Torqued down my red dot and rifle scope mounts to spec...." Read more
"Great tool!!" Read more
"...firearm maintenance and assembly, this tool provides professional-grade results with proper technique." Read more
Customers find the torque wrench intuitive and easy to set up, with clear instructions provided.
"...its precision, with one stating, “It’s a must for scope mounting—easy to use and very precise”...." Read more
"...The torque wrench was easy to use and adjust as I worked. I followed the instructions to put the torque wrench to zero after use...." Read more
"A must have for you work bench. Easy to use and very precise. I won't mount and optic without it." Read more
"...The adjustable torque settings are clearly marked and the mechanism transitions smoothly between values with positive detents...." Read more
Customers find this wrench to be an essential tool for firearm enthusiasts, particularly for mounting scopes and gunsmithing tasks, with one customer noting its effectiveness for torquing fasteners of all types.
"...It’s perfect for tightening scope rings, base screws, action screws, and even non-firearm fasteners like bike components...." Read more
"As advertised. Works great for rifle scope mounting." Read more
"...The included bit set covers all common gunsmithing applications, from scope rings to action screws, with hardened steel construction that resists..." Read more
"...The 10 bits are a bit skimpy but cover basic stuff...." Read more
Customers find the torque wrench to be a good value for the money, working perfectly for its intended use.
"...At $40-$60, it’s a great value compared to pricier alternatives like the Vortex Torque Wrench ($100+)." Read more
"...Build quality is impressive at this price point - the all-metal construction feels robust and precise...." Read more
"Wheeler is worth the extra cost. Durable and accurate" Read more
"...This is a very affordable, practical, and quality tool that you'll be pleased to own and use." Read more
Customers praise the wrench's build quality, noting its solid construction, tough bits, and durability, though some report that it breaks when reaching the desired inch/pound setting.
"...tool to ensure my rifle setups are dialed in, and it’s proven to be a reliable, user-friendly addition to my workbench...." Read more
"Nice solid torque wrench. I would recommend getting a bit set to match as it only comes with very basic bits...." Read more
"...Build quality is impressive at this price point - the all-metal construction feels robust and precise...." Read more
"...are too loose, they can fall out, if too tight, they can break under shock of multiple recoils...." Read more
Customers appreciate the wrench's accuracy, noting that it is calibrated correctly and feels precise, with one customer mentioning that the rear dial allows for fine adjustments.
"...What’s to Love: This handheld torque wrench delivers precise, repeatable torque settings from 10 to 65 inch-pounds, adjustable in 5 in-lb increments..." Read more
"A must have for you work bench. Easy to use and very precise. I won't mount and optic without it." Read more
"The Wheeler torque wrench delivers consistent, reliable performance for precision gunsmithing tasks...." Read more
"Wheeler is worth the extra cost. Durable and accurate" Read more
Customers appreciate the wrench's ability to provide correct torque on everything, particularly for small hardware and scope ring bolts, with one customer noting consistent results on all fasteners.
"...What’s to Love: This handheld torque wrench delivers precise, repeatable torque settings from 10 to 65 inch-pounds, adjustable in 5 in-lb increments..." Read more
"The driver itself works great. Torqued down my red dot and rifle scope mounts to spec...." Read more
"...The ergonomic handle design allows for smooth, controlled torque application, which is crucial for delicate operations...." Read more
"perfect tool for light gun smiting. torque settings are great for the tiny screws and scope mounts" Read more
Customers have mixed experiences with the wrench's bits: while some appreciate that it comes with plenty of them, including 10 different types, others report receiving very few bits and missing common sizes.
"...I would recommend getting a bit set to match as it only comes with very basic bits. I paired it wit a Wheeler 100 Piece Screw Driver set...." Read more
"...Accurizing Torque Wrench (F.A.T. Wrench) with Inch/Pounds Measurement, Bits, and Storage Case is a must-have for anyone serious about scope mounting..." Read more
"...Really good torque screwdriver for optics etc. not a lot of bits but you can take a bit from any tool set to fit." Read more
"...The kit came with all the bits listed and even one that worked for my CZ's...." Read more
Reviews with images

Worked to torque my CZ 457's action screws
Top reviews from the United States
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- Reviewed in the United States on June 1, 2025Style: Torque WrenchVerified PurchaseThe Wheeler Manual Firearms Accurizing Torque Wrench (F.A.T. Wrench) with Inch/Pounds Measurement, Bits, and Storage Case is a must-have for anyone serious about scope mounting, gunsmithing, or firearm maintenance. I’ve been using this tool to ensure my rifle setups are dialed in, and it’s proven to be a reliable, user-friendly addition to my workbench.
What’s to Love: This handheld torque wrench delivers precise, repeatable torque settings from 10 to 65 inch-pounds, adjustable in 5 in-lb increments, with an accuracy of +/- 2 in-lbs up to 40 in-lbs and +/- 5% beyond that. It’s perfect for tightening scope rings, base screws, action screws, and even non-firearm fasteners like bike components. The 1/4" hex drive tip comes with 10 hardened S2 steel bits (including #10, #11, #32 flat blades, 5/32, 7/64, 3/32 hex, T15, T20 Torx, Leupold specialty flat blade, and a hex-to-square adapter), covering most gunsmithing needs. The bits are coated with black phosphate to resist rust, and the magnetized tip keeps them secure during use. The ergonomic rubberized handle reduces hand strain, and the included plastic storage case keeps everything organized. Amazon reviewers rave about its precision, with one stating, “It’s a must for scope mounting—easy to use and very precise”. At $40-$60, it’s a great value compared to pricier alternatives like the Vortex Torque Wrench ($100+).
- Reviewed in the United States on June 9, 2025Style: Torque WrenchVerified PurchaseI was nervous about tightening tiny screws on my $1000 sig sauer pistol, to mount accessories. No sweat with this baby.
- Reviewed in the United States on June 10, 2025Style: Torque WrenchVerified PurchaseVery good, the product is just as described, thank you.
- Reviewed in the United States on April 11, 2025Style: Torque WrenchVerified PurchaseThe driver itself works great. Torqued down my red dot and rifle scope mounts to spec. However, the included torx T8 I believe sheared off when attempting 10 inch pounds, which seems very low given the driver is rated for 60. I had to purchase a separate bit set to use to re mount it on a new gun.
- Reviewed in the United States on January 28, 2025Style: Torque WrenchVerified PurchaseMake sure your electrical panel is OFF before using this torque wrench on it.
After 10 years it was time to retorque the breakers and buss bars on my electrical panel that had been through heat and cold and expansion and contraction. I was adding a circuit and breaker and I got the torque specs from the breakers and panel labels. I purchased a 3" square #2 bit so I wouldn't skin my knuckles working in the panel. I had 3" slotted bits for the buss bar screws. I managed to find multiple screws that were out of spec and correctly tightened them. The torque wrench was easy to use and adjust as I worked. I followed the instructions to put the torque wrench to zero after use. My only issue was with the super magnet that holds the bits in the end. It came loose and pulled out. I got the entire tool replaced by Amazon.
The calibration certificate that came with the unit was very close to perfect for electrical work on my 125A electrical panel. Most electricians don't bother with a torque wrench although it is required by the NEC. They will say their hands are calibrated and you make your connections gutentite. I found this tool perfect for the task. Please turn off your main breaker before using this wrench since it is not insulated for electrical work. If you're not comfortable working in an electrical panel you shouldn't be using this tool for that purpose.
- Reviewed in the United States on May 11, 2025Style: Torque WrenchVerified PurchaseIt's good. I trust it. Very good quality tool to have around.
- Reviewed in the United States on April 30, 2025Style: Torque WrenchVerified PurchaseA must have for you work bench. Easy to use and very precise. I won't mount and optic without it.
Top reviews from other countries
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MarcoReviewed in Italy on September 8, 2023
5.0 out of 5 stars Indispensabile
Style: Torque WrenchVerified PurchaseStrumento indispensabile per evitare di stringere troppo le ottiche (cannocchiali) sulle mount delle carabine o armi in genere.
Prima di usarla non avevo idea di quanto poco andassero strette e andato ad occhio avrei rischiato di rovinare ottiche da migliaia di euro... impossibile pensare di affidarsi al caso, questo è uno strumento che serve se siete anche solo semplici appassionati dell'ambiente tiro.
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丸山 大樹Reviewed in Japan on April 15, 2024
5.0 out of 5 stars 使いやすい
Style: Torque WrenchVerified Purchase後部を引っ張って回すだけの簡単調整。
必要なビットもすべつ入っていますから、スコープ、ダットサイトをご自身で取り付ける方には最適かと思います。
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GrzegorzReviewed in Poland on July 19, 2023
5.0 out of 5 stars Działa zgodnie z oczekiwaniami.
Style: Torque WrenchVerified PurchasePrzydatny w montażu optyki.
- Amazon CustomerReviewed in Canada on February 27, 2025
5.0 out of 5 stars Worked perfectly
Style: Torque WrenchVerified PurchaseSeems well built, comes with a nice case and worked perfectly when mounting my scope
- mark rudmanReviewed in the United Kingdom on April 7, 2025
5.0 out of 5 stars Far better than the digital version
Style: Torque WrenchVerified PurchaseI’ve had one of these for years… but sold it to buy the wheeler digital version … then regretted it
The digital type has no definite stop when it thinks you’ve reached the preset torque… and mine threw the toys out of the pram frequently bleeping and screen going bad
Can’t trust it
I bought another analogue type and again have a fully trustworthy tool that physically disengages the tool at the preset torque