SDS PLUS HAMMER DRILL BITS,It can be used with Electric Hammer of BOSCH Co., of AEG Co., of HILTI Co., of BLACK&DECKER Co., of MAKITA Co., of SKIL Co., of HITACHI Co., of TOSHIBA Co., The shank is round with dual-arc and dual-keyway. Specifications: Diameter: 3-40 Length: 90,100,110,160,175,210,260,310,350,400,450,460,600,800,1000 Application: for drilling in granite, concrete &breeze brock ,masonry ,brickwork ceramic tiles,marble Material: 45CR Packing: tube ,hang tag ,wallet