1. Exquisite Material Selection: Made of aluminum alloy, thickened material, surface drawing process, steel balls inside, flexible and smooth, rotates smoothly, features screw mounting holes, tight S in the two circles, dustproof, and more. Size is, with a lifespan of over 5 years. 2. Features: Durable, waterproof, thick and wearresistant, rustproof, impact and dropresistant, higher impact strength, sturdy, nonslip rubber padding, reduces tabletop cushioning, stable and less prone to slipping, rotating surface diameter from 20 cm to 200 cm, loadbearing capacity. 3. Installation Guide: The inner and outer rings are not level, with a 3 cm difference. Each side has 4 nonslip rubber feet for secure placement. Predrilled throughholes allow for screw mounting. Additional predrilled holes can be used for screw fastening if needed. 4. Applicable Scenarios: Turntable base, table rotating tray, restaurant service, cake making, bar swivel chair, TV stand, mechanical installation, potted plant trimming, etc. Classic and versatile, easy to use and install.