Transform your workshop with WoodRiver Heavy-Duty Casters.Smooth-rolling, non-marring polyurethane wheels won't flat spot, even after long periods of rest. Ball-bearing swivels ensure effortless movement and control, giving your shop furniture a strong, stable base. Features: Polyurethane tires provide a high load rating for superior performance and durability Ball bearing swivel allows for smooth turning action Non-locking Specifications: Caster Size: 2-1/2" Caster Height: 3-3/8" Tire Material: Polyurethane Load Rating (for each caster): 132 lb. Mounting Mechanism: 4 hole mounting plate Plate Size: 2-3/8" W x 2-7/8" L Distance Between Holes: 1-5/8" x 2-1/8" center to center What's Included: (1) 2-1/2" Heavy-Duty Caster - Non-Locking - Swiveling - 4 Hole Mounting Plate