SDS-MAX Drill Bit, SDS Max, 1 9/16 in, Carbide, 23 in Overall Length, Maximum ...SDS-MAX Drill Bit, SDS Max, 1 9/16 in, Carbide, 23 in Overall Length, Maximum Drilling Depth 18 in, Shank Diameter 23/32 in, Shank Hex Size Not Applicable, Bright (Uncoated)more