RS PRO Swivel Castor, 50 kg Capacity, 50 mm Wheel, Nylon

It's made from a nylon material that won't leave marks on your flooring. It's also highly durable and resistant to wear and occasional impacts, so it will last a long time. The attached stem is threaded for easy installation into an M8 threaded hole. You can use the wheel with water and chemicals, so it's a good choice in settings that need to be regularly hosed down or cleaned. You'll find it joined to food manufacturing equipment, office chairs and workbenches in a variety of domestic and commercial settings.