Cast Iron Alloy Piston Rings FITS HUSQVARNA PARTNER K1250 K1260 RAIL CUT-OFF SAWS 3120XP 3120K EPA CHAINSAWS 60 MM X 1.5 MM REPLACES OEM # 503 28 90-26, # 501 89 43-01, PISTON RINGS SET (2 rings total) High Quality Aftermarket Part WILL FIT MANY OTHER 2 STROKE ENGINES WITH SAME DIMENSIONS "THAT HAVE A SPLIT GROVE GAP AS PICTURED" EACH AND EVERY RING IS MEASURED BEFORE SHIPPING, ALL PHOTOS IN THIS AD ARE TAKEN BY US YOU WILL GET WHAT YOU SEE. LOCAL PICKUP IN TORONTO AREA AVAILABLE, CONTACT ME IF YOU HAVE ANY QUESTIONS Mike 647-515-4111