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 pack 20% more power than the most common stone drill bits and clear out drilling dust and debris super fast. The bits are made from chrome-vanadium steel, which gives them top-notch breaking strength. Fits all hammer drills with SDS+ attachments. 2-blade tip. Blade geometry ensures 20% faster drilling. The short blade tip keeps the drill hole from clogging, and dust and debris get removed efficiently. Chrome-vanadium steel structure.