QUENX.
LB50B/F Fixed Castor 50mm, Heavy Duty Nylon Wheel
LB50B/P Swivel Plate Castor, 50mm Heavy Duty Nylon Wheel
LB65B/P Swivel Plate Castor 65mm Heavy Duty Nylon Wheel
LB65B/F Fixed Castor 65mm Heavy Duty Nylon Wheel
LB75B/F Fixed Castor 75mm Heavy Duty Nylon Wheel
LB75B/P Swivel Plate Castor 75mm Heavy Duty Nylon Wheel