Caster Kit, mobile equipment includes (4) 3″ diameter adjustable height universal swivel plate casters, 2″ height adjustment (8-1/2″ to 10-1/2″), non-marking polyurethane tread, toe activated brake, 200 lb. capacity per caster, resistant to acids & caustics, 3-1/2″ x 3-1/2″ top plate, operational temp range -45° to 180°F, POP box, NSF