Service Caster #20 Series square stem swivel casters with 4 inch polyurethane wheel. Featuring a zinc plated finish, these casters are ideal for racks and shelving. Stem includes cross drilled mounting holes for secure installation.
Wheels roll smoothly with integrated ball bearing design. 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.
Wheel dimension: 4" x 1-1/4"
Stem: 3/4" Square, 2" Length
Mounting height: 5-1/8"
350 pound capacity per caster