Cutter Details: 4pcs 4-sided cutterhead CNC leveling mill bit : 1/4inch; Cutting Width: 1/4inch, 5/16inch, 3/8inch, 1/2inch. The 4-piece surfacing busting plate milling cutter has different cutting widths, which can cut grooves of different sizes, and can also clean the surface of the plate. It can meet most of the needs of users. This professional bottom-cleaning router bit is not only great for board flattening, rebuilding, or planing the top surface of scrap boards, but it's also great for trimming and grooving/grooving. Great replacement drill tool for woodworking ! Industrial-quality router bits feature an anti- design with a heat-resistant coating to resist sawdust, resin, and pitch build-up.Suitable for milling machines or desktop woodworking routers, such as CNC handheld and desktop milling machines. Material: Carbide colour: silver+green Package Contents: 4 x CNC Spoilboard Surfacing Router Bits(1/4inch, 5/16inch, 3/8inch, 1/2inch) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.