Manual chain grinding tool, optimized shape, more precise guide, help to improve the working efficiency of the chain saw. Optimized shape for more precise guide, help to improve the ;chainsaw work efficiency. Grinding any chain quickly and easily can make your saw chain sharper and easier to use. Just manually rub down to forward and backward to get your chain smooth and shiny again. A handy tool for sharpening teeth and measuring depth in one step. This is a fine quality chain grinding tool, optimized shape for a more precise guide that helps improve the work efficiency of the chainsaw. Both sides of the whetstone are easy to use, allowing the user to operate directly on the chainsaw without accidentally injuring their finger. Sharpen any chain quickly and easily, making your saw chain sharper and easier to use. You can try to do it. Features: Hand chain sharpening tool, can easily and quickly sharpen any chain. Shape optimized for a more precise guide, helps to improve the work efficiency of the chainsaw. Handy tool to quickly sharpen teeth and depth gauge in one step. Both sides of the whetstone are easy to use, allowing the user to operate directly on the chainsaw without accidentally injuring their finger. Sharpen any chain quickly and easily, this which makes your saw chain sharper and easier to use. Just manually rub it backwards to make your chain smooth and shiny. Suitable for all chainsaw sizes. Budget: Material: bearing steel. Color: blue File diameter: 4, 8mm Package Contents: 1 Chainsaw Chain Sharpener. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.