The Makita P-66070 10 piece SDS+ drill bit set is an European manufactured hammer drill Bit Set adapted for SDS-plus hammers with patented High volume multi-flutes that can quickly channel the drilling dust away from the hole.The P-66070 bits have been designed for regular professional use and provide excellent performance in the toughest of materials including high resistance materials such as green concrete and engineering brick. The unique reinforced flute geometry transfers more impact energy from the rotary hammer to the drill head reducing stress for the user and the power tool. Set contains: 10 - SDS+ Bits Sizes 4x110mm(L): 5 5.5 6 7mm. 6x160mm(L): 5.5 6 7 8 9 10mm.