Features:* Made of advantageous material, and reliable* Suitable for bar chairs, office swivel chairs, car seats, display stands and more.* Strong load-bearing capacity, challenging to deform or squeeze* Can rotate for 360 levels freely and smoothly*Uses a quarter-inch ball to circumvent noise.* There are 3 diameters on your : 3 inches, four inches, 6 inchesSpecification:* Material: galvanized sheet* Colour: Black* Optional diameter: 3 inches, 4 inches, 6 inches* Size: 3 inches 71*71mm, 4 inches 94*94mm, 6 inches 155*155mm* Quantity: 1PCSPackage content:1 x hole turntableNote:1. The real shade of the object could also be barely varied from the photographs proven on web content attributable to many points similar to brightness of your display screen and light-weight brightness.2. Please enable slight manual dimension deviation for the data.