Used it for tie rods, ball joints, upper control arms, lower control arms, it makes seperating a ball joint (controll arm or tie rod whatever type of joint) pretty ok. I don't think these are impact rated but i didn't care at all so i gave it the beans with my 1/2 milwaukee midtorque and the little pin that holds both pieces together snapped. Probably just gonna chuck a bolt in it and nut i don't care it was cheap and got the job done. It still works, the pin is just long enough to still engage it so i will use it. It's just meant to put pressure on the joint then give it a few hits where the joint goes into the knuckle or wherever and it should just fly right out. I was lazy and the tool broke, if you care use hand tools.