Feature:1. Made of highquality zinc alloy, durable, strong bearing capacity, not easy to damage and deform.2. Better flexibility and ease of use, can rotate 360 degree freely, and doublebearing rotates smoothly.3. The special structure bearing has many functions such as rotation, transmission and fixing, and has excellent performance.4. Easy to use and install, suitable for furniture chairs, bar chairs, office chairs, car chairs, display racks, etc.5. Professional manufacturing, fine workmanship, relatively small swing gap, very stable.Specification:Item Type: Turntable BearingMaterial: Zinc AlloyWeight: Approx. 378g / 13.3ozProduct Size: Approx. 20.5x20.5cm / 8x8inProduct Aperture: Approx.10.2cm / 4.0inScope of Application: Bookshelves, shelves, tables, etc..Package List:1 xTurntable BearingNote:1. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.