TA-VIGOR Forstner Drill Bit 21mm, Tungsten Carbide Wood Hole Saw Auger Opener for Woodworking Hinge Hole Drilling Boring Bit Cutter (Gray)

Package Contents - 21mm woodworking forstner drill bits, use with bench drills, vertical drill presses, CNC routers. Material - Heat-treated tungsten carbide tip, sharp cutting edge, no burrs, high hardness, impact resistance, smooth cutting, wear-resistant, durable and long service life. Application - Suitable for drilling holes on wood furniture. Cuts wood, plywood, solid wood boards. For cutting flat bottom holes, pocket holes, and overlapping holes. Easily enlarge existing holes and drill any arc of circles. Design - Arc curve design head, easier chip removal, higher perforation efficiency, good for boring concealed hinges and door locks. Three sharp spurs provide repeatable, clean and precise drilling. The centering spur can accurately center holes. Usage - Suitable for bench drill, vertical drilling machine, CNC carving machine. Processing hardwood or other hard materials should be injected with water to improve the quality and accuracy of drilling, and extend the life of the hole opener.