HIPA Chain sprocket Clutch Cover Needle Bearing Fuel Line Filter for STIHL 017 018 021 023 MS170 MS180 MS210 MS230 MS250 Chainsaw Fitment models: STIHL 017 018 021 023 MS170 MS180 MS210 MS230 MS250 Chainsaw Package include: 1 x sprocket cover, 1 x sprocket needle bearing, 1 x fuel line, 1 x fuel filter