Each rubber caster wheel can support up to 66 lbs. Set of 5 holds 330 lbs maximum;Eliminates the need for ugly expensive plastic floor mats;Heavy-duty rubber caster wheels designed as direct replacement wheels for office chairs;Features standard 7/16 inch (11mm) stem and easy-rolling 2 (50mm) twin caster rubber wheels

• Slipstick Cb680 Rubber Caster Wheels, Set Of 5 (New And Improved)

Slipstick Cb680 Rubber Caster Wheels, Set Of 5 (New And Improved)Slipstick