The set includes four bit for grooving , trimming , and carving applications , crafted from premium steel with a protective black coating and universally compatible 1 / 4inch shank for seamless installation Ideal for both professional woodworkers tackling intricate projects and enthusiasts seeking reliability , user friendly tool for home improvement tasks enhanced cutting efficiency and extended tool life with these bearing router bit designed to reduce friction and deliver consistently smooth operate This 10piece / set router bit features bearing design for effortless and precise cutting , offering multiple shapes for various woodworking tasks while ensuring durability with high strength steel construction Perfect for creating clean edges on furniture , carving decorative patterns in cabinetry , or routing precise grooves in hardwood and softwood materials during workshop, Manufacturer: Zenlir