Features:* Made of fine material, and reliable* Suitable for bar chairs, office swivel chairs, car seats, reveal stands and more.* Strong load-bearing capacity, not easy to deform or squeeze* Can rotate for 360 levels freely and smoothly*Uses a quarter-inch ball to circumvent noise.* There are three diameters in your : three inches, 4 inches, 6 inchesSpecification:* Material: galvanized sheet* Colour: Black* Optional diameter: 3 inches, 4 inches, 6 inches* Size: 3 inches 71*71mm, four inches 94*94mm, 6 inches 155*155mm* Quantity: 1PCSPackage content:1 x hollow turntableNote:1. The genuine colour of the object could also be slightly diverse from the pictures shown on web content attributable to many points resembling brightness of your display screen and lightweight brightness.2. Please enable slight handbook dimension deviation for the data.