SPEEDHAMMER Plus concrete and masonry wall drills are for demanding users who only want the best. Thanks to the innovative spiral blade, they have 20% more power than the most common stone drill bits and remove drilling dust and chips 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 Thanks to the short blade tip, the drilling channel doesn't clog and dust and chips are removed efficiently Chrome-vanadium steel structure