Fast-drilling Bulldog SDS-plus bit design with a carbide tip, brazing process and centric tip for rapid rotary concrete drilling Bosch-made carbide tip deliver outstanding durability under heavy loads Upgraded flute design aggressively pulls dust away from hole, for faster and cooler drilling Centric conical tip ideal for drilling anchoring holes, the centering tip provides precise starts Hex drive on bit fits into driver sleeve features a 14 In. hex shoulder for a drive sleeve used to set masonry screws Includes Hex Drill Bits 532, 316 Flat Shank Bits 532, 316 Drill Bits Phillips Insert Bits #2, #3 5-34 Sleeve, Sockets 14, 516