Service Caster #20 Series 1-3/8 inch expanding adapter stem swivel casters with a 3-1/2 inch solid blue polyurethane wheel and posi lock. Featuring a zinc plated finish, these casters are ideal for light and medium duty material handling, carts, shop projects, and any equipment with round or square tube legs.
The polyurethane wheel performs well on most surfaces, and excels on hard surfaces like concrete, tile, and wood. They will not mark or mar floor surfaces.
Mounting Height: 4-5/8"
Expanding Adapter Size (Inside Diameter): 1-3/8"
Wheel Size: 3-1/2" x 1-1/4"
300 pound capacity per caster