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:1/4“Shank Diameter:1/4" Cutting Length:1" Overall Length：3”.The downcut Trimming Knife is designed for efficient and precise trimming of welding edges, suitable for post-welding processing of various metal materials such as particle board, chipboard, MDF, plywood, Laminate and Solid wood . It can quickly remove welding slag, burrs, and flash, ensuring smooth and even weld seams, thereby enhancing the appearance quality and welding strength of the workpiece. 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.