515184 Bushing; Wheel 1.5″ OD x 1.25″ ID x 1.25″ L Ryan Renovaire 544317

New 515184, Bushing; Wheel, Aerating Wheel Bushing, Ryan 515184, Fits Ryan 544317 Renovaire, measures 1.5″ OD x 1.25″ID x 1.25″L, These appear to be sintered, self-lubricating, without window, C6D10