Features: *High-speed steel grinding heads have features of high hardness, high wear resistance, high heat resistance and resistance. *It can be easily screwed onto an electric grinder and can easily sharpen chains and serrated blades. *The guides in the accessories provide the best sharpening angle *This product is electric grinding accessories kit, and it should be used with electric grinder. Specifications: Product name: Chain sharpener Material: Metal Color: Red, Black, Blue, Orange Size: (Approx.)7*6*4 cm Quantity: 1 pc Package Content: 1*Chain sharpener Note: 1. Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. Chain Sharpener Power Tool Accessories Serrated Sharpen Tool Gear Grinding Tools Packing List:1*chain sharpener For the quality problems or defects of the product itself, we will provide unconditional return or repair service