Poly on Plastic Medium Duty
4" x 2" Red Polyurethane on Plastic Kingpinless Medium Duty Casters
5" x 2" Red Polyurethane on Plastic Kingpinless Medium Duty Casters
6" x 2" Red Polyurethane on Plastic Kingpinless Medium Duty Casters
8" x 2" Red Polyurethane on Plastic Kingpinless Medium Duty Casters