Convenient: Easy to use, just attach the clamp to the rod, place the ratchet on the tooth, insert the drill into the guide bushing and turn the handle. High accuracy: sharpening ensures that each tooth is repaired, and ratchets ensure and repeatable tooth placement. With good performance. Highly compatible: This chain saw grinder is suitable for all kinds of chainsaws, it is the best choice for lumberjack and gardeners as chainsaw cutting tools. Portable: The chainsaw sanding tool is small in size, light in weight, easy to carry, does not take up too much space, and is convenient and practical. Durable Material: The portable chainsaw grinder is made of premium tungsten steel grits and alloy materials, with high hardness and durability., Manufacturer: Airshi