Quick results: The chainsaw bit is distributed with complete and even particles. These files can sharpen the chain stably and effectively. It only takes a few minutes to rid of the troublesome hand sharpening once and for all. Durable: The hardest titanium wheel we manufacture uses titanium electroplating process, which means that the life of this drill bit is 20% than that of other non-titanium electroplating. Easy to use: These drill are specially designed for electric saw sharpeners. It can be replaced in just 2 steps. In this way, this titanium-coated file has a harder and reduces the number of replacements. Applicable: 3/16 inch wheels, suitable for 0.325 inch chains, 3/8 chainsaw chains. Note: There may be many black spots on the surface of the wheel. It is not that the titanium coating falls off, that the titanium and silicon carbide are mixed. Better use. size:4.8mm Material:Emery colour: Package Contents: 8 * Chainsaw Sharpener Stone Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.