Yellow/Green/Red Chainsaw Teeth Sharpener or Sharpen Stone Bar-Mount Chain Sharpening Tool.      Features:  1. This precision saw chain sharpening system is not only fast but also accurate, sharpen your dull chain in just 3-5 seconds.  2. Save time and high efficiency, making your sharpen work easy.  3. Role: It can make your saw chain more sharp, easy to use.  4. Installation: Easy to install, just put the chain and saw into the chain cutter.  Specification:  Color: Yellow/Green/Red/ 01(sharpening stone);  Appilication: For chainsaw chain sharpening;  Size: 21*14*3.5cm;  Suitable for 16-20 inch guides, universal grinding chain.  Fits most models: Craftsman, Poulan, Homelite, Husquvarna, Dolmar, Echo, Makita, McCulloch, Redmax, Skil, and Cub Cadet.  Step 1: Attach:  When the chain dulls, simply attach the bar-mount sharpener to the guide bar. Two guide holes in the top of the bar make perfect alignment fool-proof.  Step 2: Sharpen:  Press the tip of the sharpener to a solid surface for 3-5 seconds.  Step 3: Cut: And it is back to the job, working fast with less effort.     Package Included:  1 x Chainsaw teeth sharpener;  or 1 x Sharpening Stone(optional).