Swivel Caster 3-1/2" x 1-1/4" Polyurethane Wheel 2-1/2" x 3-5/8" Plate 275# One 3-1/2" Wheel, Total Working Height 4-3/4" Plate (One) Caster 2-3256-95 Plate (56) Plate: 2-1/2" x 3-5/8" (250# Cap.) (One)