SPEEDHAMMER Plus concrete and masonry wall drills are made for demanding users who only settle for the best. Thanks to their innovative spiral blade, they pack 20% more power than the most common stone drill bits and clear out drilling dust and debris super fast. The blades are crafted from chrome-vanadium steel, ensuring top-notch breaking strength. Fits all hammer drills with SDS+ fittings 2-blade tip Blade geometry guarantees 20% faster drilling The short blade tip keeps the drill hole from clogging, and dust and debris get removed efficiently Chrome-vanadium steel structure