Cylinder Assembly / Stihl 1111 020 1200Pack Size:1Stihl 1111 020 1200HL Supply R6000551, Rotary 8401Stihl 050, 051, TS510 and TS50 Cutquik sawsBore: 52 mm, Coating: Ceramic, Includes: Piston, rings, pin and clips, Ethanol: Not compatible with greater than 10% ethanol fuel