About Xuanfeng Factory :We are a professional factory with 15 years of production history. Our factory philosophy is to provide our customers with: satisfactory quality of use, high work efficiency, and perfect after-sales service. About that product: Cutting Diameter: 1/8" Cutting Length: 1-1/4" Shank Diameter: 1/4" Overall Length: 2 1/2" Flutes: 4 For use in CNC milling and carving machines. 3D carving CNC end mills with NACO coating provide the extra length needed to carve 3D shapes out of solid wood, plastic, foam and other materials. The extended bit design provides the necessary reach to create high relief projects. It is important to perform the large material removal with a standard CNC endmill and only utilize these bits for the final high-resolution pass. Any added strain on these bits can result in breakage to these delicate bits. With the added naco coating, the bit's lifespan and durability are substantially increased, avoiding any unnecessary down time. nACo coating provides longevity and produces cutting results of the highest quality. use for cutting: Laminate, Melamine Particle Board,MDF,Veneered Plywood,Wood for use on CNC, table mount and handheld routers. up to 2.5X longer life compared to uncoated bits Nano blue coating enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality. Coating prevents high heat and oxidation which is detrimental to cutting tool performance. Warranty For Customers: Quality assurance. if there are any problem with the item please contact us at first, we will offer new item exchange or refund policy.