The manual chain saw grinding tool optimizes shape and provides more precise guidance, which helps improve the efficiency of the chain saw. Optimizing the shape to achieve more precise guidance can help improve the efficiency of chain saws. Quickly and easily casting any chain can make the saw chain sharper and easier to use. Just manually rub back and forth, and your chain will be smooth and shiny again. A convenient tool that can grind teeth and measure depth in one step. Suitable for all sizes of chain saws. Features: Manual chain grinding tool, which can easily and quickly grind any chain. Optimizing the shape to achieve more precise guidance can help improve the efficiency of chain saws. Convenient tool that can quickly grind teeth and depth gauge in one step. Both sides of the sharpening stone are easy to operate, allowing users to operate the chain saw directly without accidentally injuring their fingers. Quickly and easily polish any chain, making your saw chain sharper and easier to use. Simply manually rub back to make the saw chain smooth and shiny. Suitable for all sizes of chain saws. Budget: Material: Bearing steel. Color: Orange File Diameter: 4.0mm Item Size: 32 x 6.85 x 2.53 cm Package Content: 1 x Electric Saw Chain Saw.