It is a useful portable tool, with this product you can use it to polish the chain of an electric chainsaw to restore the chain to its previous state. Made of fine materials, is a very practical product, can extend the life of the chain. Come and try it. Features: With this product, you don't need to spend money to buy another chain chainsaw, you can use this product to extend the life of the chain. This product can provide a quick, simple and reliable sharpening method, easy to use. Please note that grinding the chain when the file can only be used in one direction, otherwise it will damage the chain. The product is small, does not take up space, easy to carry, you can take it anywhere you want. It is a practical tool and can quickly and easily sharpen the tee-th and depth gauge in one action, saving labor. Features: Material: metal Type: 4.8 mm / 0.2 inch Fits: 325" chainsaw Item size: 322 * 60 * 15mm / 12.7 * 2.4 * 0.6 inch Item Weight: 318g / 11.2 ounces Package size: 410 * 85 * 20mm / 16.1 * 3.3 * 0.8in Package weight: 359g / 12.7 ounces Packing list: 1 * pencil sharpener ?