【Precision Size】8mm shank CNC face milling cutter, cutting diameter 51mm, cutting height 12.7mm. 【Premium Material】Made from microcrystalline carbide inserts and solid hardened steel body for superior wear resistance and sharp edges, precise cutting reduces debris and burrs, and has aanti-backlash design.High precision grinding technology, stable and efficient. 【Multifunction】4 blades allow you to quickly and cleanly cut your project material, clean your spoilboard surface or create a base surface perpendicular to the router motor, also suitable for cutting and grooving/grooving.Can use to flatten live edge boards too large to pass through the planer, ideal for projects of any level of complexity. 【Widely Applications】These router bits are suitable for cutting solid wood, particle board, plywood, MDF and different wood composites.(avoid cutting black metal and non-woody materials such as steel, iron and sand). 【Applicable Machines】Suitable for CNC routers and other automatic routers as well as handheld and table-mounted portable routers.wood engraving machines, trimmers, etc.