1 x DEWALT 8.5mm Black And Gold Hex Drill Bit HSS. DEWALT BLACK&GOLD Hex HSS-G Drill Bits made with a 1/4in hex shank, designed to withstand radial torque with percussion hammers and compatible with most power drills. The black and gold coating helps to prevent rust and wear. A 135° split point tip helps to reduce walking. Its strong, conical braided design provides extreme durability and resistance to breakage.