General description The 7 Pieces Wood Drill Bit with Countersink set includes 8 countersink drill bits in 7 different sizes (3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm) along with a hex key for easy adjustment. Each bit is marked with its size for quick identification, catering to various woodworking needs. Technical specifications Material: High carbon steel Sizes: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm Design: Three-point design for precise drilling Cutting Edges: 5-cutting edge sharp chamfers Compatibility and accessories Compatible with drills that have a chuck Suitable for most bench drills or hand drills Includes L-shaped hex key for adjustments Installation Easy to adjust or disassemble using the provided hex key Usage Ideal for drilling into plastic, PVC, rubber, particle board, hardwood, and parquet Designed for fast chip removal and efficient drilling