General description The CSPARKV 2Pcs 8mm Countersink Drill Bit Set is designed for woodworking, featuring a depth stop and a center drill that efficiently discharges chips from the hole, preventing debris accumulation and enhancing drilling efficiency. Technical specifications Diameter: 8mm Material: High-quality alloy steel Quantity: 2 pieces Usage Ideal for punching holes in various materials including solid wood, particle board, plywood, MDF, plastic, and soft metal. Adjustable drilling length for screws of different lengths by removing the screw with the provided hex key.