Tru-Cut Manufacturing's SDS-Plus drill bits are made in the U.S.A. Starting with the highest quality domestic alloy steel; Tru-Cut obtains carbide tips for their bits to be higher quality than their competitors. Tru-Cut's carbide tips are then copper brazed and heat treated without the use of flux in their state-of-the-art Vacuum Furnace that produces stronger brazes without voids. Finally Tru-Cut Manufacturing shot peens the outer surface to skin harden the drill bits. With the extra effort and engineering that Tru-Cut puts into their drill bits, you can expect more holes at a competitive price than any of their foreign competition.