SPECIFICATION
-Smooth and Silent and Sturdy
-FEATURES: These Low Profile Caster Wheels give you the ability to Carry items of very heavy capacity while staying low profile.
-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.