SDS-MAX Drill Bit, SDSMax, 1/2 in, Carbide, 28 in Overall Length, Maximum Dri...SDS-MAX Drill Bit, SDS Max, 1/2 in, Carbide, 28 in Overall Length, Maximum Drilling Depth 23 in, Shank Diameter 45/64 in, Shank Hex Size Not Applicable, Bright (Uncoated)more