Description: Use the chain saw chain grinding jig to make your chain saw as sharp as new, making your work more time-saving and labor-saving. Easy to use-just fix the clamp to the rod, position the pawl on the teeth, insert the burr into the guide sleeve, and turn the handle. Precision maintenance-every time you grind your teeth, you only need to pull the chain. Precise sharpening to ensure that every teeth is repaired. Precise positioning-the pawl acts as a stop device to ensure accurate and repeatable teeth positioning. The perfect choice-standard 30 sharpened rake angle, anodized aluminum fixture, with detachable crank and a set of guide sleeves, can be used with most chain saws. Specification: Material: Aluminum Alloy Size Chart: 8x8x4cm/3.15x3.15x1.57inch Package Includes: 2 Pieces Chain Saw Sharpener Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!