[Detail]: There are whole and lightly allotted debris on the chainsaw bits, it's going to sharpen the chain observed chain step by step and efficiently. []: burr grinding stone dossier is product of effective materials with nice hardness, followed titanium plating process, durable and not soft to get broken, you would get pleasure from 30% lifetime of those bits than others non-titanium-plated. [Easy to operate]: These bits are specifically designed for Electric Chainsaw Sharpener. you could prepare it to shine without disassembling the chain, which reduces the variety of you could replace it. Effectively recuperating paintings efficiency. [Application occasions]:3/16 inch wheels for 325 inch chain, huge 3/8 chainsaw chain. These sharpening grinding tools are extensively applied for machinery, bearing, mold, casting points deep hole, various inside surface, welding spot, welding seam grinding and burr grinding. [Tips]: If there are black spots at the surface of the wheel. That's just a mixture of titanium and silicon carbide. No must fear about usage problems, it can be used safely and normally. colour:Golden Material:Emery size:4 Package Contents: 10 x Burr grinding stone dossier Only the above kit content, diversified item usually are not included. Note: Light and sundry exhibits can cause the colour of the article in the photograph somewhat different from the genuine thing. The dimension allowed error is +/- 1-3cm.