High-quality materials - The spiral wood drill bits are made of high-quality 45# carbon steel. for a long service life. Area of application - Fast-rotating twist drills Professional woodworking drill bits for wood/plastic/rubber/softwood/hardwood/plywood/chipboard etc. Unique design - Woodworking drill set with spiral design for fast chip removal. The wood drill bits with centering tip enable precise positioning of the hole. High-quality convex edges enable drilling of clean, precise holes. Compatible machines - The round shaft can be used with electric drills, bench drills and cordless drills without additional equipment to ensure the execution of drilling work and woodworking tasks.