STRONG AND DURABLE: Made of high carbon hardened steel. After high temperature hardening, the surface is not easy to decarburise, which prolongs the usage time. Adopt precise secondary cutting grade with clear teeth. 4 in 1 wood file: plane milling cutter, semicircular secondary cutting, plane wood file, semicircular wood file, multi-tooth structure, four-way wood file reasonably improves the filing rate, the surface can be flat, curved surface and other kinds of finishing. Reduce the labour intensity of workers and improve work efficiency. Convenient and easy to use: ergonomic shape design, easy to hold, better control. Just pick up this small file and file what you need. WIDELY USED: This wood file is not only suitable for wood sanding, but also can be used for sanding soft metal, soft plastic products, leather and so on. SATISFACTION GUARANTEED: If you want to know the product problems, feel free to !