Swivel Plate Caster Load Rating 1400 lb. Wheel Dia 8 In. Wheel Width 2 In. Overall Height 10-1/4 In. Wheel Material Polyurethane Inside Bolt Hole Spacing 2-7/16 in x 4-15/16 In. Outside Bolt Hole Spacing 3-3/8 in x 5-1/4 In. Plate Type A Wheel Color Tan Core Material Cast Iron Raceway Sealed Precision Ball Wheel Bearings Precision Ball Plate Size 4-1/2 in x 6-1/4 In. Durometer 80 Shore A Core Color Black Mounting Bolt Dia 1/2 In. Frame Material Steel