Cutter Details: 4pcs 4-sided cutterhead CNC leveling mill bit : 1/4inch; Cutting Width: 1/4inch, 5/16inch, 3/8inch, 1/2inch. The set of 4 surfacing milling cutters comes with different cutting widths, enabling the cutting of grooves in various sizes and cleaning the surface of boards. It fulfills most user requirements. This professional bottom-cleaning router bit is ideal for flattening boards, resurfacing, or planing the surface of reclaimed wood. It is also excellent for trimming and grooving. A great replacement tool for woodworking! Industrial-quality router bits boast an anti- design with a heat-resistant coating to prevent the buildup of sawdust, resin, and pitch. Compatible with milling machines or desktop woodworking routers, such as handheld CNC mills and desktop 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 to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.