Selling PoiChainsaw Teeth Sharpener Sharpens Portable Durable Easy Power Sharp Bar-Mount Fast Grinding Chainsaw Chain Sharpener Toolnt Dear friends, if you don't know how to put a single-hole chain into the product, you can contact our customer service, he will teach you how to operate~ ?EASY TO USE?Chainsaw sharpener made of high-quality and durable materials, the chain saw sharpening tool is installed inside the rod sharpener to keep the chain and guide rod oiled, reducing friction and prolonging service life. ?CHAINSAW TOOL?Chain saw blade sharpener kit Lightweight and portable, the chain saw sharpening tool is easy to use outdoors. It is the most practical tool and best gift for your father or husband to increase productivity. ?High Quality?:- Chainsaw sharpener made of high-quality and durable materials, the chain saw sharpening tool is installed inside the rod sharpener to keep the chain and guide rod oiled, reducing friction and prolonging service life. ?Eesy To Use And Carry?:- Chain saw blade sharpener kit Lightweight and portable, the chain saw sharpening tool is easy to use outdoors. ?Fantastic Design?:- Chain saw sharpening with two holes for fixing the sharpening knife, suitable for 14/16/18/20 inch chain saw work, gently squeeze the end of the guide rod during sharpening,it can be sharp sharpening.Chain saw sharpening with two holes for fixing the sharpening knife, suitable for 14/16/18/20 inch chain saw work, gently squeeze the end of the guide rod during sharpening,it can be sharp sharpening. ?Fast and Effective?:- This precision saw chain sharpener system is not only quick, but also accurate. It will sharpen your dull chain in just 3-5 seconds. I know it sounds Iike magic, but it does work. If your chain has only one hole, you only need to remove the two-hole fitting, you can put the single-hole chain into the product.