FIRSTINFO F3220DD 3.4:1 Compact Torque Multiplier 600 Nm - 1/2 inch Drive (Male) to 1/2 inch Drive (Female) Adaptor Max. 600 Nm/Labor Saving Tool for Lug Nut

Very useful torque adapter

Important first note, I only used this to torque a nut to 500 ft/lbs so I didn't push it to its claimed limit. This worked perfectly for me and was incredibly less expensive than a torque wrench with the same capability would have been. The multiplier has a range of accuracy of something like 4% which has to be figured along with the accuracy of the torque wrench you're using as well. This could result in a relatively large variance in actual torque applied but that's the payoff for saving a couple hundred dollars (minimum) on a higher capacity torque wrench.

Worked well, I wish the stop arm was stronger and maybe some longer lengths, it is sometimes hard to find something for it to work against.

I bought this to remedy having using a super long cheater pipe's on socket wrenches to get extra torque for breaking loose or tightening big nuts/bolts over 300 ft/lbs. I fabricated a handle extension from steel tubing to use it for that application. Caution in drilling the handle as it is hardened steel. I put three stainless bolts thru and attached a 40+inch handle. This works similar to the much more expensive Torque multiplication wrenches costing $300.00 bucks and beyond. I can still use it as normal to break loose tire lug nuts since the handle is mounted on the outside of the arm, just reverse insert the multiplier thru the wrench opening (*its backwards displayed in my picture if you were loosening lug nuts on Tire). Price and quality are good Satisfied customer

I was very happy to find a torque multiplier this small so that it could be used to turn engines for the purpose of adjusting valve clearance.

Love it . I use it in the maintenance field. Able to break stubborn nuts at bolts.

Had to modify it ....the handle has to lock on to the rim of the car, but with the socket add to the tool, it's to long so the handle ends up to short........

Will not work on RV trailers with center hub caps , you need a deep socket and then the support ancor is not long enough to reach into wheel web to incorporate multiplier . Center cap will not come out until wheel is off comes out the back of wheel

I haven’t used this yet, but appears to be really good quality

Bought this to use at work in a heavy equipment technician environment. Works great in areas where you need big wrenches torque spec but access barely allows full size wrenches to fit Update on 03/20/2025 well it worked great but after a year the output shaft broke off, will have to buy the bugger one next time

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pour la dépose d'une roue arrière de ducati, je force beaucoup moins pour desserrer l’écrou. seul petit bémol ,la clé de maintien est un peu courte pour se bloquer sur les bâtons de roue. je l'ai rallongé de 5cm et plus de problème.

used it to remove some very stubborn leaf spring bolts where i couldn't get a pipe on the end of a breaker bar due to access did one side without this and spent 3 hours just to get one bolt out, with this it took 10 minutes on the other side