【Heavy-Duty Capacity】 This set of 4 caster wheels has a total weight capacity of 500 lbs.These casters constructed with ball bearings,which provide smooth swivel action and easy direction changes rollability
【With Brake】Each caster is fitted with locking brake which locks the wheel and swivel to effectively hold the wheel,prevent the loaded storage racks from rolling and hurting others
【Smoother Move&Lower Noise】Made from premium TPR,no noise,anti-corrosion and more sturdy.Smoothly moved with no marking,the surface of the rubber wheel is soft and better protects the ceramic tiles,carpets,laminate,and even hardwood floors
【Easy to Install】These storage rack caster wheels coming with all mounting hardware (bolts,nuts,washers) for quick installation,it's adapt to storage racks that have boltless self locking shelving systems