Kingpinless Caster Load Rating 700 lb. Wheel Dia 5 In. Wheel Width 1-1/2 In. Overall Height 7 In. Wheel Material Polyurethane Inside Bolt Hole Spacing 2-7/16 x 4-15/16 In. Outside Bolt Hole Spacing 3-3/8 x 5-1/4 In. Plate Type A Wheel Color Tan Core Material Cast Iron Raceway Single Ball Hardened Wheel Bearings Roller Replacement Wheel Mfr No 125 PT1H Plate Size 5-1/4 x 6-9/16 In. Includes Top Grease Seal Durometer 95 Shore A Core Color Gray Mounting Bolt Dia 1/2 In.