Caster, 5" diameter swivel plate, top lock brake, non-marking polyurethane tread, 300 lb. capacity, resistant to acids & caustics, 2-3/8" x 3-5/8" top plate, 1-3/4" x 3" bolt hole pattern, 1/2" king pin, double ball bearing, operational temp range -45° to 180° F, zinc plated
