General description The Sprocket cover with chain tensioner is designed for STIHL chainsaws, specifically models MS170, MS180, 017, 018, MS210, MS230, MS250, 021, 023, and 025. This 6-in-1 set includes a sprocket cover, chain tensioner, bolts, and nuts, making it a comprehensive solution for maintaining your chainsaw. Technical specifications Material: Strong ABS plastic Includes: Sprocket cover × 1, chain tensioner × 1, nut × 2, bolt × 2 Usage Replacing parts is quick and easy, ensuring effective protection for your chainsaw. Other information If you encounter any problems, please contact us for a 100% satisfactory solution.