Durable MaterialThe Bar Stool Swivel Plate is made of high quality steel plate, heavy steel constructions, good carrying capacity and smooth rotating operate. 360 Degree RotationSeat swivel base allows for 360 degree rotation, making it easy to turn chairs and stools in any direction. Easy to InstallChair Swivel Base with its simple design, this swivel plate can be installed quickly and easily. Smooth and QuietThe smooth and quiet operate of this swivel plate ensures that your chairs and stools will rotate quietly, without any annoying squeaking noises. ApplicationChair Swivel Plate is suitable for use as furniture swivel base, such as bar stool , swivel, rocker, recliner chair, table, etc. Specification: Material: Steel Plate Size Chart: 6inch: 15.8cmx15.8cm/6.22inchx6.22inch 7inch: 18cmx18cm/7.09inchx7.09inch 8inch: 19.8cmx19.8cm/7.80inchx7.80inch Package Includes: 1 Stool Swivel Plate Note: Please allow slightly errors due to manual measurement and different monitors.