Service Caster #20 Series 7/8 inch expanding stem swivel casters with 4 inch solid blue polyurethane wheel with 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. Total lock brake system locks both swivel and wheel when engaged.
The solid polyurethane wheel performs well on most surfaces, and excels on hard surfaces like concrete, tile, and wood. They will not develop flat spots from extended inactivity, or mark and mar floor surfaces.
Mounting Height: 5-1/8"
Expanding Adapter Size (Inside Diameter): 7/8"
Wheel Size: 4" x 1-1/4"
300 pound capacity per caster
Wheel hardness: 60 - 65 Shore (D) Durometer