The 7 Best Torque Limiting Extensions

This wiki has been updated 22 times since it was first published in October of 2018. Whether you’re a professional mechanic or a DIYer, when your projects involve tightening nuts and bolts with an impact wrench, you'll save significant time by attaching a torque limiting extension. This valuable invention will also help ensure you don't accidentally apply too much force, which could damage equipment. Here we list the best models based on quality, ease of use, and price. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki.

This wiki has been updated 22 times since it was first published in October of 2018. Whether you’re a professional mechanic or a DIYer, when your projects involve tightening nuts and bolts with an impact wrench, you'll save significant time by attaching a torque limiting extension. This valuable invention will also help ensure you don't accidentally apply too much force, which could damage equipment. Here we list the best models based on quality, ease of use, and price. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki.

1. Capri Tools 30083

The Capri Tools 30083 (about $50) are made with ultra-durable chrome-molybdenum steel, and their capacity ranges from 65 to 140 foot-pounds. The set consists of five sticks, and they’re each color-coded, so it’s a cinch to find the exact one you need.

Storage case with compartments
Recommended by mechanics
Insert and remove from wrench easily

2. ABN 1/2-Inch Drive

Fasteners that are placed at awkward angles aren’t a problem for the ABN 1/2-Inch Drive (about $54), which are designed to safely loosen such connections without causing any damage. What’s more, their spring-loaded ball detent will lock to prevent parts from slipping into machinery.

From a midwest family-owned company
Sizing laser-etched on each
Resistant to rust and corrosion

3. Astro 78810

Used by both mechanics and hobbyists, the Astro 78810 (about $84) are known for their high accuracy range of just 5 foot-pounds, and they can withstand a good deal of abuse, to boot. They’re a piece of cake to handle and simply stop turning when you’ve hit the desired force.

A heavy-duty set
Smooth matte finish
Impressive lifespan

4. Steelman 50090A

The Steelman 50090A (around $20) is 8 inches long to allow for easy clearance at a safe distance from wheels, and it’s designed to stop and absorb impacts when it reaches your desired limit. It’s powder coated and light gray in color, so finding it in your toolbox should be a snap.

For electric or air wrenches
A real timesaver
From a well-respected manufacturer

5. Neiko 02450A

With the Neiko 02450A (appx. $50), the limit specifications come engraved on each bar for speedy identification during busy days, and they prevent fasteners from being tightened too far effectively. They lock onto sockets securely to reduce disruptions and make for quicker projects.

Good for everyday use
Available in sets of 5 or 10
Slightly less accurate than others

6. Sunex 5335TE

The Sunex 5335TE (appx. $70) can apply up to an impressive 475 foot-pounds, and its longevity will provide many years of use, thanks to its sturdy steel build. This one-inch drive stick can even handle the inner and outer cap nuts on heavy-duty trucks.

Can extend life of impact sockets
Craftsmanship is warrantied
An expensive choice

7. Astro Tools 78818

Look to the 8-piece Astro Tools 78818 (around $48) for a spot-on job virtually every time, and they also come with corresponding lug nut sockets with protective sleeves to help prevent any damage. Everything is housed in a handy, compartmentalized case that features secure latches.

Half-inch drive size
Fit some specialty wheels well
Can crack with extensive use

Last updated by Christopher Thomas

Building PCs, remodeling, and cooking since he was young, quasi-renowned trumpeter Christopher Thomas traveled the USA performing at and organizing shows from an early age. His work experiences led him to open a catering company, eventually becoming a sous chef in several fine LA restaurants. He enjoys all sorts of barely necessary gadgets, specialty computing, cutting-edge video games, and modern social policy. He has given talks on debunking pseudoscience, the Dunning-Kruger effect, culinary technique, and traveling. After two decades of product and market research, Chris has a keen sense of what people want to know and how to explain it clearly. He delights in parsing complex subjects for anyone who will listen -- because teaching is the best way to ensure that you understand things yourself.

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