【HARD AND WEAR RESISTANT】Our grinding wheel files are made of high quality steel and the surface is plated with titanium, which has high hardness, good wear resistance and anti-rust surface. The texture is hard and the service life is much longer than other wheels without titanium plating.【FINELY POLISHED】The grinding wheel polishing head is made of high quality emery, the particles are fine, full and even and the file is sharp. Good grinding effect, super grinding performance, fine carving, high efficiency and wear resistance, no deformation.【EASY TO USE】The chainsaw file is easy to install and can be polished without disassembling the chain, which reduces the number of chain replacements, saves your time and effort, and improves work efficiency.【SIZE】You will get 12 titanium coated diamond sharpening cutters, each with a total length of 1, 78inch (45mm), blade length 0.87inch (22mm) and blade diameter 5/32inch (4mm)，shank diameter 0.12inch/3mm, suitable for electric chainsaws.【WIDE APPLICATION】Diamond sharpening wheels have high working efficiency, strong and wear-resistant, and are widely used in machinery, chains, molds, deep holes of workpieces mouldings, jade, glass, etc. grinding burrs and polishing different surfaces.