HDX 4 in. Industrial Casters with Bumper (4-Pack) …
The HDX 4 in. Industrial Casters are designed to hold up to 150 lbs. each, fitting units with 1 in. Dia. posts and 3/8 in. inserts. Featuring a swivel design for easy mobility, the pack of 4 includes brakes on 2 of the wheels for control and safety.