Replacement Bearing for Morra Hay Tedders fits modes MH420 and MH530 hay tedders. These bearings are used on each wing of the hay tedder and are located right behind the pinion gear that drive the outer basket of the hay tedder. These bearings measure 30mm ID X 55mm OD X 19mm thick and two are used in each tedder, one in each wing. See position 85 in the attached parts schematic drawing Specifications: 30mm bore, 55mm outside diameter, 19mm thick, two used on each tedder Fits Models: MH420 and MH530 tedder