Snap On has reverse twist cobalt?bits that work good.
I havn't broke one off,but if you do i imagine they would be a biotch to deal with.I have removed a bunch of broken bolts with mine.
One out of three need a remover.My guess to the real world amount that i have removed.
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews