Feature: 1. 12MM SHANK: This router bit features a standard 12mm shank and can be directly installed on CNC router, handheld and table router. 2. INDUSTRIAL GRADE: The spoilboard surfacing router bit is made of high carbon steel, which has higher strength and durability, and a longer service life. 3. CARBIDE BLADE: Adopting a unique 2 plus 2 indexable blade design, the bottom of the cutting surface is smoother. With 4 cutting edges, when one side becomes blunt, user can rotate the blade. 4. EFFICIENT CUTTING: The wood planer router bit adopts screw locking, featuring ample chip space for effective chip removal, light cutting, low milling resistance. 5. PERFECT APPLICATION: Ideal for re laying spoilboard, planing large plywood, wood surfaces and fine finishing, grooving, with better performance, finer surface finish, better 90° angle clearance. Specification: Item Type: Spoilboard Surfacing Router Bit Material: High Carbon Steel, Carbide Shank Diameter: Approx. 12mm/0.47in Cutting Diameter: Approx. 45mm / 1-3/4in Cutting Blade Size: Approx. 12x12mm/0.47x0.47in. Package List: 1 x Spoilboard Surfacing Router Bit1 x Storage Box Note: There is slight size error due to manual measurement.