Secure, non-slip grip Hexagonal handle provides maximum stability and prevents slipping for a secure hold and better control while drilling. Easier to keep steady for precise countersinks and chamfers. Clean, efficient cutting Advanced five-edge cutting structure produces smooth chamfers and removes burrs cleanly, reducing the need for secondary grinding. Efficient chip removal keeps the hole and cutting edge clear, saving time on each operation. Durable, all-purpose construction Made from high quality carbon steel for long-lasting performance and resistance to premature wear. Maintains stable cutting performance during repeated use across different materials. Versatile application Suitable for wood, metal and plastic: use the same set for a wide range of projects. Designed for common woodworking tasks like finishing tenon joints and drilling larger component holes, as well as general countersinking for screws and fasteners. Use scenarios Furniture assembly: countersink screw heads and chamfer edges for a flush, professional finish when installing hinges, drawer slides, or mounting hardware. Joinery work: prepare clean chamfers and tenon shoulders to reduce fitting time and eliminate the need for reworking edges. Retrofit and installation: drill and countersink holes in metal or plastic panels for mounting brackets, fittings, or trim without excessive deburring. What you get A countersink drill set that combines secure hexagonal handling, a five-edge cutting geometry for smooth results, and carbon steel durability for reliable performance in home and workshop projects.