LOAD CAPACITY: Each caster carries up to 150 lbs capacity, Max Weight Capacity: 450Lbs per set.
MATERIALS:Thermoplastic Rubber, Metal. Thermoplastic Rubber Casters offer resistance to oils and chemicals.
Endurance and Quiet Mobility: The non-marking wheel surface combines with superior endurance and quiet mobility.
NOTICE: If you find the casters received does not fit, please contact the seller before returning or complaining. Please tell me the problem and your solution idea, I will absolutely offer a satisfied solution for you.