Feature: 1. That gives the user the power to sharpen their chain, on the saw, on the job. 2. Provide a fast, simple and portable method of sharpening saw chain. 3. The sharpening stone fits inside the bar-mounted sharpener. 4. Clamps over the end of the guide bar when sharpening. 5. Easy to use，improving work efficiency. Specification: This chainsaw sharpening kit will sharpen your dull chain in just 3-5 seconds. Features: That gives the user the power to sharpen their chain, on the saw, on the job. Provide a fast, simple and portable method of sharpening saw chain. The sharpening stone fits inside the bar-mounted sharpener. Clamps over the end of the guide bar when sharpening. Easy to use，improving work efficiency. Specifications: Main color: yellow Main material: whetstone Item size: 210 * 140 * 35mm / 8.3 * 5.5 * 1.4in Item weight: 312g / 11.0ounce Package size: 300 * 210 * 50mm / 11.8 * 8.3 * 2.0in Package weight: 320g / 11.3ounce Package list: 1 * Saw Sharpener Package List: 1 * Saw Sharpener