SPEEDHAMMER Plus concrete and masonry wall drills are for demanding users who only settle for the best. Thanks to the innovative spiral blade, they've got 20% more power than the most common stone drill bits and they clear drilling dust and debris super fast. The blades are made from chrome-vanadium steel, which gives them the best possible breaking strength. Fits all hammer drills with SDS+ fittings 2-blade tip The blade geometry ensures 20% faster drilling Thanks to the short blade tip, the drill channel doesn't clog and dust and debris are removed efficiently Chrome-vanadium steel structure