【Premium Material】 Our countersink drill bit is made of M35 high-speed steel with cobalt coating, offering toughness, heat resistance, and lasting durability. Perfect as a countersink drill bit for wood or metal use. 【Clean & Precise】 This countersink bit is designed for smooth countersinking, deburring, and chamfering. The cone tip ensures accuracy, while the spiral flute works efficiently as a chamfer tool. 【Wide Compatibility】 Works with drill press, milling machines, cordless drills, and more. This countersink drill bit doubles as a chamfer bit, making it ideal for machinists, DIYers, and homeowners. 【Sharp & Portable】 Featuring a hex shank with a 82° point, this countersink bit ensures precise chamfering and clean finishes. Each chamfer tool comes with storage case, making it easy to carry, well-organized, and preventing loss. 【Complete Set】 Includes 5 most popular sizes (1/4 , 3/8 , 1/2 , 5/8 , 3/4 ) and 1 special size 5/16 . Each chamfer tool and chamfer bit meets varied drilling needs, giving you one convenient and versatile set. Set Name COMOWARE Drill Bit Set Brand Name COMOWARE Shank Type Hex Unit Count 6.0 Count Part Number TGM35Countersink-6p Finish Types Cobalt Manufacturer COMOWARE Material Type Carbon Steel Tool Flute Type Spiral Number of Flutes 2 Number of Pieces 1 Surface Recommendation Stainless Steel