6" x 2" Swivel Casters Polyurethane Wheel on Steel Hub 1200lb (4) Tool Box. Below is more information and specs on this product. Feature: 3/4" Roller Bearing with 1/2" ID Bushing (Manufacture will provide zerk fitting in the wheel or axle). Top Plate: 4" by 4-1/2". Bolt Pattern: 3" by 3".
Material: Heavy Duty Polyurethane on Steel Hub. 1 - Set of 4.