4pc - 3 Storage Rack Caster Wheels (Adapts to Boltless Self Locking Shelving) 1500 lb. Max Total Capacity

Installs on your existing storage rack. After installing these wheels, your shelf can easily roll and no longer has to be stationary. These wheels adapt to storage racks that have boltless self locking shelving systems Wheel Material: NBR (Nitrile rubber). Locking wheels Includes 4 caster wheels and hardware 1500 lb. Max Total Capacity