60" WIDE CLASS 1 HITCH 25 HP. THRU 45 HP. BASICALLY MEANS TOP LINK USES 3/4" PIN, BOTH BOTTOM LIFT ARMS USE 7/8" DIAMETER PIN. AERATOR WEIGHT 550 LB. (SO KEEP IN MIND) SMALLER 25 HP RANGE TRACTOR MAY NOT PICK IT OFF THE GROUNDASK CUSTOMERS, SO THEY KNOW.