Bosch Rotary Hammer Bit Set Bulldog 6 Piece Carbide Tipped 4 Cutter Masonry Concrete Drill Chisel Kit SDS Plus Chuck Heavy Duty Anchor Installation Brad Nailer Hi ATB Tooth Geometry: High Alternate Hi ATB Tooth Geometry: High Alternate Top Bevel tooth grind shears wood fibers and composite resins cleanly to eliminate surface blowout and tearout ensure your remaining fingers rest cleanly on the deep carry pocket clip rather than squeezing down directly on the lock bar itself Pulling the bit back slightly every few inches helps clear packed masonry dust from the deep four flute valleys Heavy Duty Concrete Masonry Drilling Kit for Jam Free Rebar Penetration