Extended flush bits provide smooth wood cutting and work for slotted and wood screw holes; Made of solid hardened steel and C3 tungsten carbide, high angles of hook and shear allow the knives to slice smoothly; Shank: 1/4"/ 6.35mm; Blade length: 2"/50mm, 3"/76mm; Blade width: 3 /8" / 9.52mm; Widely used for wood, MDF, particle board, plywood, board, softwood and other synthetic wood processing workers, smooth surface; Woodworking router bit designed for handheld and desktop wood engraving machine design, can not be used in electric drill, drilling machine, etc. Description Product Description Kind Note: 1. Avoid processing copper, iron and other metallic materials, as well as sand, stone and other non-wood materials. 2. Cannot be used in an electric drill, drill or the like. 3. Do not think that the new jacket must be safe and reliable. When the tool clamping tool after the handle found uneven contact marks or grooves, indicating slippage and deformation of the jacket hole, then