Feature: 1. Made of high‑quality 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 double‑bearing 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 Bearing Material: Zinc Alloy Weight: Approx. 378g / 13.3oz Product Size: Approx. 20.5x20.5cm / 8x8in Product Aperture: Approx.10.2cm / 4.0in Scope of Application: Bookshelves, shelves, tables, etc.. Package List: 1 x Turntable Bearing Note: 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.