Service Caster #20 Series swivel casters with 4 inch semi steel cast iron wheel. These versatile casters are ideal for light and medium duty material handling, carts, equipment, and shop projects.
Wheel size: 4" x 1-1/4"
Top plate size: 4" x 4-1/2"
Bolt hole pattern: 2-5/8" x 3-5/8" to 3" x 3"
Bolt size: 3/8" (hardware not included)
Mounting height: 5-1/8"
350 pound capacity per caster