Service Caster #20 Series swivel casters with 4 inch polyurethane wheel are a versatile choice. Featuring a zinc plated finish, these casters are ideal for light and medium duty material handling, carts, equipment, and shop projects.
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 size: 4" x 1-1/4"
Top plate size: 2-1/2" x 3-5/8" with ball bearing swivel
Bolt hole pattern: 1-3/4" x 2-7/8" to 3"
Bolt size: 5/16" (hardware not included)
Mounting height: 5-1/8"
350 pound capacity per caster
Wheel tread hardness: Durometer Shore 55D (+/- 5)