Description: MaterialBar stools swivel plate is made of iron material, which is strong and sturdy, can be used for a long time360 Degree RotationSeat swivel base allows for 360 degree rotation, making it easy to turn chairs and stools in any directionSmooth Stable RotationThe smooth and quiet operate of this furniture swivel plate ensures that your chairs and stools will rotate quietly, without any annoying squeaking noisesTurntable BaseBall bearing raceway for smooth rotation, sturdy construction, good carrying capacity and smooth rotating operateVersatile UseSquare swivel mechanism is ideal for various furnitures, bar stools, chairs, office swivel chairs, car seats, display stands, or any piece of furniture that requires rotation functionality, great for enhancing the functionality of your furnitures Specification: Material: Iron Size Chart: 3inch: 7.3cmx7.3cm/2.87inchx2.87inchOr4inch: 9.8cmx9.8cm/3.86inchx3.86inchOr6inch: 14.8cmx14.8cm/5.83inchx5.83inch Package Includes: 1 Piece Swivel Plate Mechanism Note: Please allow slightly errors due to manual measurement and different monitors.