General description Double-sided cutting spiral carbide drill bit designed for milling cutters, made from premium fine grain tungsten solid carbide. This high-quality set includes five drill bits, ideal for various woodworking and CNC machining applications. Technical specifications Shank diameter: 3.175 mm Cutting edge diameter: 3.175 mm Cutting length: 22 mm Total length: 40 mm Compatibility and accessories Suitable for CNC machining cutters Compatible with woodworking machines and CNC routers Usage Effective for cutting and milling on MDF boards, particle boards, and logs Can be used on acrylic, PVC, resin, plastic, composite materials, and melamine boards Suitable for solid wood, plywood, and lotus trays Other information Features sharp ends with a combination of upper and lower blades High precision grinding and polishing for enhanced performance Resistant to abrasion and high temperatures Good rigidity and durability, not easy to break No burrs produced during up and down spiral