Countersink drill set with hexagonal shank and five-edge cutting configuration, made from high-carbon steel. Key benefits Safer, more accurate drilling: the hexagonal shank reduces slipping and gives a secure grip for confident, controlled drilling. Robust construction supports precise handling and helps prevent accidents on the job. Clean chamfers in one pass: the durable five-edge cutting geometry produces smooth, consistent bevels and removes wood burrs efficiently, eliminating the need for additional sanding. Long-lasting performance: high-carbon steel construction delivers exceptional durability and wear resistance so the cutters keep performing even under heavy use. Multi-material versatility: designed for use on wood, metal, and plastic, making the set suitable for a wide range of workshop and home projects. Reliable for demanding tasks: the set supports complex joinery (such as tenon work) and handles large component holes, offering a multifunctional approach to different craft needs. Typical applications Furniture and cabinet work: countersink screw heads and produce finished chamfers on tabletops, cabinet parts, and trim without extra sanding. Joinery and assembly: prepare and finish tenon joints, dowel holes, and larger component openings with controlled, repeatable results. Metal and plastic finishing: deburr drilled holes and create smooth beveled edges for safer, cleaner parts. Material and function summary Shank: hexagonal for reduced slipping and secure engagement Cutting geometry: five-edge configuration for efficient burr removal and smooth chamfers Material: high-carbon steel for durability and long service life Suitable for: wood, metal, and plastic This countersink set is designed to provide secure handling, fast clean finishes, and long-term durability for both home and professional use.