Application：Compatible with all small and big blocks including popular sizes of 327 350 355 383 388 400 406 427 434 454. -Easy to Use: Thick rod design, triangular end, no sliding plate. Just insert the tool and connect a 3/8 “or 1/2” drive reversible drill bit.

Easy to Use: Thick rod design, triangular end, no sliding plate. Just insert the tool and connect a 3/8 “or 1/2” drive reversible drill bit. Billet aluminum adjustable collar and black oxide-coated steel shaft.