38mm drill bits, tungsten carbide auger for wood hole saws, hinge hole drilling for woodworking (blue, grey)

Forstner Bit: Drilling diameter: 38 mm / 1.5"; Shank size: 9 mm / 0.35"; Drilling depth: 50 mm / 1.97"; Overall length: 80 mm / 3.15". Thickened carbide cutter and solid hardened steel body, round shank Forstner bits for woodworking. Applications: Can be used for drilling holes in wood and plastic products, furniture, and door hinges. Used for cutting wood, plywood, solid wood boards, MDF, plastics, fiberglass, etc. The Forstner bit is intended for general use. Features: Tungsten carbide cutting tip with special heat treatment for a sharp edge, high hardness, no burrs, and long-lasting use. Curved, arc-shaped head design for easy chip removal and more efficient drilling. How to use: Suitable for bench drills, vertical drills, and CNC cutting machines. Hardwood or other hard materials should be treated with water to improve drilling quality and accuracy and extend the life of the hole opener. Tips: Maximum speed: 2000 RPM. For use on desktop (fixed) equipment only and NOT for use on handheld power tools (such as a hand drill or electric drill). Cannot drill metal or non-ferrous metals. To avoid damage, ensure there are no nails or other metal objects in the wood before drilling. The cutting edge and point of the hole opener should be sharpened regularly.