The listing is for a set of four (4) service caster series #20 casters, two (2) swivel and two (2) rigid casters, with 5" diameter by 2" wide phenolic wheel and maintenance free precision ball wheel bearings capable of supporting a total weight of 1,800 lbs. (450 lbs./caster).
- The top plate measures 2-3/8" x 3-5/8" with a bolt-hole pattern of 1-3/4" x 2-7/8" to 3" and can either be bolted or welded on.
- Bolt size: 5/16" (hardware not included)