80/30/40/12 Polyurethane Wheel with 6201 2RS Ball Bearings
6 Pieces Transfer Ball Wheels Universal Ball Castors Easy to Install Swivel Bed Castors Wheels for Furniture Machines and Toys : Amazon.co.uk: DIY & Tools
Bearing Nylon Ball, 10 Pcs Universal Steel Ball Roller Ball Wheel, Casters Nylon Small Castor Wheels, Ball Transfer Bearing for Conveyor, Transmission, Furniture, Load Capacity 30KG Per Castor : Amazon.co.uk: DIY &