SPEEDHAMMER Plus concrete and masonry wall drills are made 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 out 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 Blade geometry ensures 20% faster drilling The short blade tip means the drill hole won't clog and dust and debris get removed efficiently Chrome-vanadium steel structure