Set of 4, Wheel Bushings Replace Murray 91334, 91334MA, 491334, 491334MA, 24367 Set if 4 Front Wheel Bearings, Two For Each Wheel Replaces Murray Part Numbers 91334, 91334MA, 491334, 491334MA, 24367 ID: 3/4", OD: 1-3/8", Height: 1", Plastic