HIPA 40mm Cylinder Piston Kit Assembly for STIHL FS120 FS200 FS200R FS250 FS250R String Trimmer Brush Cutter Piston Ring Clips Wrist Pin Needle Bearing Gasket Cylinder diameter: 40mm Fitment models: STIHL FS120 FS200 FS200R FS250 FS250R string trimmer Package include: 1pc cylinder, 1pc piston, 1pc ring, 2pcs clips, 1pc wrist pin, 1pc gasket, 1 pc wrist pin needle bearing