Review on 🔧 Capri Tools 30083 Torque Limiting Extension Bar Set, 5 Piece - 65 to 140 ft. lbs. - 1/2 in. Drive by Derick Carpenter

Torque readings seem to be accurate to within a few foot-pounds at a time and they fit snug enough not to fall off my impact wrench while not causing any pain when pulled. . Just make sure you use them on a traditional hammer based impact model and not a clutch based model. I can confirm they are not accurate with the clutch model. I think that's because the hammer applies force more or less instantaneously, while the clutch spreads the force over a few milliseconds. It doesn't seem like a huge difference, but with torsion bars it really gets in the way.