Drillpro M35 Cobalt Countersink Drill Bit Description Product Details: Description: The Drillpro M35 Cobalt Countersink Drill Bit is versatile for all your deburring and chamfering needs. It includes sizes of 2-5mm, 5-10mm, and 10-15mm, making it perfect for a range of projects. Specifications: Brand: Drillpro Material: HSS-Co M35 Cobalt Surface Treatment: Plated cobalt coating Chamfer: 90° Specification Table Suitable for Pore Size Shank Diameter Head Diameter (Max Chamfer Size) Total Length 2-5mm 6mm 10mm 45mm 5-10mm 8mm 14mm 49mm 10-15mm 10mm 21mm 64mm Uses: Ideal for use with Aluminum, insulation board, PVC board chamfer, steel, aluminum, sheet metal, carbon steel, and 304 stainless steel. The industrial-grade cobalt plating offers superior durability, lasting longer than traditional high-speed steel materials like 4241 and 6542. Features: 90-degree chamfering for precision work Uses CNC technology and CBN grinding wheel for higher accuracy Internal chip removal reduces metal shavings Cobalt coating enhances wear and oxidation resistance 6mm round handle with double top grinding ensures tool concentricity Package Included: 1 x Drill Bit Set