Features： 1、Durable Material: Adopts plastic and steel materials, wear resistance and long service life, has more refined appearance. 2、Easy to Install and Use: 4.0mm universal manual chain grinding tool, can sharpen their chains on saws and in operations. 3、Convenient Operation: Chain grinder is equipped with handles on both sides, allowing users to operate directly on the saw without accidentally hurting their fingers. 4、Scope of Application: Chain sharpener is suitable for installation in a straight rod sharpener, and fixed at end of the guide rod when sharpening. 5、Use Method: Provides quick and simple way to sharpen saw chain, can help improve the efficiency of the electric saw, suitable for gardening work. Specification： Item Type: Chain Sharpener Color: Black Material: Plastic + Steel Specification: 4.0mm/0.2in Weight: Approx. 331g / 11.7oz Size: Length Approx. 31.5cm / 12.4in Package List： 1 x Chain Sharpener