Piston Ring Set fit STIHL 020, 020AV, 020T, MS200T Kolbenring Rings (40MM) After-market PISTON RING SET-Replace STIHL Part Number: #4119 034 3003 Fit STIHL models:?020, 020AV, 020T, MS200T Model This kit consists of 2 (TWO) PCS of Piston rings : Diameter: (40MM), Thickness (1.5MM) Estimated Time of Delivery from Singapore: 7-16 working days