ITACO Piston Ring Set fit STIHL TS360 TS400 360 400 08 039 MS390 390 Rings Kolbenring After-market PISTON RING SET-Replace STIHL Part Number: #1127 034 3006 / 1127 034 3007 Fits STIHL TS360, TS400, 08, 039,MS390 Chainsaw Models Piston Ring Diameter: (49MM), Thickness (1.5MM) This kit consists of 2 (TWO) PCS of Piston rings Estimated Time of Delivery from Singapore: 7-16 working days