Our overstock selection changes all the time, so keep checking here often. Today, we’re offering a 6″ x 2″ Polyurethane on Polypropylene Plastic wheel rigid caster. With a 500 lb capacity, these will carry quite a load. Top plate is 4″ x 4-1/2″ with 2-5/8″ x 3-5/8″ slotted to 3″ x 3″ bolt holes. Uses 3/8″ or 5/16″ attaching bolts. Overall height is 7-1/4″.