Piston Rings Std / Stihl 1118 034 3001Pack Size:1Stihl 1118 034 3001Ahlborn FOR-6331, HL Supply H04615, HL Supply CR4615Stihl 028, 029, 034, MS 290 chain saws; BR 380, BR 400, BR 420 blowers; SR 400, SR 420 sprayersCylinder Diameter: 46 mm, Ethanol: Not compatible with greater than 10% ethanol fuel, Packaged in reusable protective polycarbonate case