Ruaizel Countersink Drill Bit Set Deburring Chamfer Drill Bits, 4Pcs Cobalt Coated Countersink Drill Bit, Countersink Bits for Metal, Stainless Steel, Copper, Wood

• Comprehensive Kit: This kit includes three countersink drill bit of different sizes, each of which comes with countersunk hole chamfering tools of 2-5MM, 5-10MM, and 10-15MM, providing you with a complete kit that meets all your drilling needs
• Premium Quality: Crafted from M35 HSS cobalt countersink drill bit with cobalt coating, our countersink drill bits boast unparalleled toughness, high temperature threshold and long-term durability, delivering consistently exceptional results
• Titanium Aluminum Nitride Coating: Increases surface hardness to 94HRC with outstanding heat-resistance, so your drill bit cuts fast and stay sharp. Superior strength, heat resistance, and durability, making it ideal for drilling metal
• Impressive performance: When used after pre-drilling screws or deburring holes and chamfering the edges of parts, they are cut clean without vibration. The conical tip ensures precise alignment, and the expanded helical groove prevents chip blockage and enables rapid chip removal
• Widely Use: Our countersink bits are compatible for use with a range of drilling machines, table drills, milling machines, cordless drills and impact drivers. Perfect for machinists, DIY enthusiasts and homeowners

Specification: Performance: The bottom hole diameters are 2-5MM, 5-10MM, and 10-15MM The total length is 45MM, 50MM and 64MM Handle diameters: 6MM, 8MM, 10mm Head diameters: 10mm, 14MM, 21MM Material: Metal Color: silver Packing list：M35 HSS Cobalt Countersink Drill Bit * 1