When I changed the clutch basket on my dirtbike I screwed around for awhile trying a bunch of crap; bike in gear w rear brake, screwdriver jammed through sprocket, using vicegrips on a clutch steel....nothing worked. Went to sears and picked up a C3 1/2" impacts they had on sale. Once the battery was charged, the nut was spun off in less than a second. I was debating about returning(renting) it when the purchase was made, but after the first use it was given a home in my toolbox.