FAST RESULT: Because there are full and evenly distributed particles on the chainsaw bits, these files can sharpen the chain saw chain steadily and efficiently. Only a few minutes, Get rid of troublesome hand sharpening once and for all.DURABLE: The latest, hardest titanium-plated Diamond Wheels wee ever made, adopted titanium plating process, which means you will enjoy 20% longer lifetime of these bits than others non-titanium-plated.EASY TO USE: These bits are specially designed for Electric Chainsaw Sharpener. Only 2 steps to replace. By the way, this titanium-plated files have harder nature, which reduces the number of times you have to replace it.Note: There may be many black spots on the wheel surface. Its not that the titanium coating has fallen off, but that the titanium and silicon carbide mixed. This is better for using.SUITABLE: 7/32 inch wheels for big chainsaw chain such as 404,3/8-Inch chain.Material:Emerycolour:GoldPackage Contents:8 * Burr grinding stone file 7/32 inchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.