s:【Metal Material】: Chair Round Base is made of high quality aluminum material, strong and durable, can be used for a long time【Size】: Swivel chair base diameter is 38.5cm/15.16inch【Convenient Use】: Bar Stool Base replacement is easy and convenient to install and use.【Replaceable Accessories】: Bar Stool Swivel chair base can be a good for your old or broken chair accessories【Applicable】: Table chair base suitable for pub bar stool, gaming chairs, barber stores, dining table chairs, etc.Specification:Material: aluminum materialSize Chart:Diameter: 38.5cm/15.16inchThick: 0.11cm/0.04inchPackage Includes:1 Chair Round BaseNote:Please allow slightly errors due to manual measurement and different monitors.