Description: 【ABS Plastic】The Chainsaw Sharpener consists of abs plastic sharpener and whetstone, whetstone suitable for the sharpener mounted on the pole and give away an extra whetstone. 【Perfect Design】The chainsaw sharpener is designed with 2 holes, for fixing the sharpening knife, one hole is fixed, the other is move back and forth and take it down, very flexible, suitable for 16″,18″,20″, and suitable for one or two hole chain saw. The black bottom is elastic and adjusts the distance of the sharpener.(Not suitable for ECHO 16″ and Husqvarna 455 20″ chainsaw) 【Easy To Use】Check your chainsaw blade whether have two holes. If your saw blade is single-hole, you can remove the sliding cylinder on sharpener, then install and use. Remember to fix and tighten the black screws before sharpening the knife. 【Fast and Efficient】This chainsaw sharpener is not only fast but also accurate. Your chain saw become sharp only need a few seconds. It allows you to quickly and easily sharpen chain without taking off the chain. Keeps saw chain oiled for less friction and a longer lifespan. Specification: – Size:21×14×3cm – Material:Plastic + Whetstone Operational Instructions: Step 1: Open the Grinding Step 2： Fix the chainsaw on the hole of the sharpener Step 3: Close the sharpener and push the lock Step 4: Start the chainsaw and press down until it touches the whetstone for 3-5 seconds Note: If your blade has only one hole, please drill another hole on the blade before using.