DEWALT DD5060 IMPACT READY Drilling Set, 10-Piece The product is 10PC Imp Drill Bit Set Easy to use The product is manufactured in China Ground from solid one piece design is up to 5 times more durable than the current 2 piece conventional product. Patented web taper increases the rigidity of the bit to decrease the potential for bit breakage Patented web taper increases the rigidity of the bit to decrease the potential for bit breakage Patented Pilot Point(R) tip allows users to drill holes faster than the conventional split