Caster Wheel, 3000 lb Load Rating, 3000 to 5999 lb Load Rating Range, 12 in Wheel Dia., 2 1/2 in Wheel Width, Phenolic Wheel/Tread Material, Hard, 90 Shore D, Roller, Standard Tread Shape, 1 in For Axle Size, No Includes Spanner Bushing, Plastic Wheel Core Material, Yes Non-Marking, 3 1/4 in Hub Length