Service Caster #20 Series 1-1/2 inch expanding adapter stem swivel casters with a 4 inch nylon wheel and total lock. Featuring a zinc plated finish, these casters are ideal for work tables, shop projects, and any equipment with round or square tube legs.
Mounting Height: 5-1/8"
Expanding Adapter Size (Inside Diameter): 1-1/2"
Wheel Size: 4" x 1-1/4"
300 pound capacity per caster