"BOSCH" SDS-MAX SHANK DRILL BIT *3/4" x 16" x 21" *Wide bore head *Centric tip guides bit through hard and reinforced concrete angled dust channels *Reduced heat built-up resulting in longer life *Inclined side cutters- aggressive edge forfaster cutting *Wear mark identifies when bit was worn to level inappropriate for precision anchoring *Long pitch spiral for increased speed and reduced vibration