My impact wrench is the handheld kind you whack with a hammer. Works great on rusted cars. However, it has a 3/8 drive and I cannot find a 3/8 drive 7/32 allen head. I'll keep looking since the typical L-shaped allen keys have all bent over under force (a 3 foot extension). I've got several wild-eyed torch waver pals who will heat the bolt before I whack it. I guess Catman is worthy since he has a Mystere 6.0 and wouldn't purposely hurt another Mystere, especially one he should beat upwind and down (mine's a 5.0).