60" WIDE CLASS 1 HITCH 25 HP THRU 45 HP TRACTORS BASICALLY MEANS TOP LINK USES 3/4" DIA. PIN BOTH LOWER LIFT ARMS USE 7/8" DIA. PIN. AERATOR WEIGHS 550 LB. (SO KEEP IN MIND) SMALLER 25 HP. TRACTOR PROBABLY WON'T BE ABLE TO LIFT OFF THE GROUND. BE SURE TO ASK CUSTOMER. WHEN USING, IF TRACTOR NEEDS TO BE PUT IN REVERSE--PULVARIZER NEEDS TO BE RAISED UP--DO NOT BACK UP WITH IT ON THE GROUND!