Perry Hunsaker's KnuckleSaver Bullet Starter - Muzzleloader Made from T-6061 aircraft alumiunm wont harm barrel or rifleings. Fits most muzzleloading bullets. Threaded 10-32 for custom bullet tips & cleaning rod extension. Can be used as a t-handle in the field or from the bench. Made in the U.S.A by Americans. Patent pending!!