High-quality chain sharpener. This chain sharpener is made of high-quality ABS plastic and durable sharpening stone. Three sharpening stones are included for replacement. Please note that the grinding wheel has high wear resistance, keep the chain and bar oiled to reduce friction and extend the product's lifespan, so you can continue to use this saw sharpener. Chain all the time. Safe and fast. Protect your hands from injury. You don't need to touch the inside with your hands when using the tool. It is very safe to use. The bar-type chain sharpener provides a quick and easy method for chain sharpening. It only takes 3-5 seconds to sharpen the chainsaw, which significantly improves productivity and saves time. The most practical tool and the best gift for your father or husband. Suitable for 14-20 inch chainsaw chain. This chainsaw blade is designed with 2 holes for attaching the chainsaw blade. When sharpening, one hole is fixed, the other is adjustable, very flexible to install. If the blade is single-hole, you can unscrew 6 screws and then remove the movable sliding rivet, then install and use. It is suitable for 14/16/18/20 inch chainsaw chain except Echo 16 inch chainsaw. Easy to use and carry. This chainsaw blade sharpening kit is lightweight and portable, easy to use outdoors. Simply install the sharpening stone correctly, attach the chainsaw to the sharpening hole, then close and lock the portable chain sharpener. Finally, just clamp your foot on the chain sharpener and start using it. You can sharpen your tools anytime, anywhere. 3 removable sharpening stones. The sharpening stone is removable and replaceable. If it is loose after opening the package, don't worry, you can open the chain sharpening kit and put the stone back into the black clips designed to secure the stone, ensuring the tool can do the job well.