Swivel Plate Caster Load Rating 1600 lb. Wheel Dia 8 In. Wheel Width 2 In. Overall Height 9-1/2 In. Wheel Material Type 304 Stainless Steel Inside Bolt Hole Spacing 3 x 3 In. Outside Bolt Hole Spacing 2-5/8 x 3-5/8 In. Plate Type B Wheel Color Silver Core Material Stainless Steel Raceway Double Ball Wheel Bearings Stainless Steel Double Shielded Precision Ball Replacement Wheel Mfr No W-820-SB-1/2 Plate Size 4 x 5 In. Includes Spanner Bushing Core Color Silver