This isn’t a handle as such: it’s a chain-drive offset. You use your favorite handle on one side, and it transfers the force to the other side, where you attach a socket. Useful, sort of, in very tight spaces, but usually an extension bar or fine-tooth ratchet is a better solution.
Location: Box 16
Have you used this tool? Think my description is all wrong? Have a better example? Comment now with any thoughts you have about this tool!
