These Lazy Susan Bearings are low profile at only 5/6" thick. They're engineered to add a minimum of height to an item, with only a rolling contact between sections. They can even be recessed into surfaces, reducing space occupied to 1/8". The sections are also stamped into a one-piece unit over time.
These rotating components are stamped using corrosion-resistant galvanized steel that can be coated with protecting compounds (clear coat finish, black chromate finish, yellow chromate/zinc finish) to help with rust protection and to change the visual look of the bearing, This swivel bearing design has a deeper race groove, encapsulating the balls more effectively and allowing them to move more smoothly.