A Multi Function Wheel Balancing & Truing Stand. Portable Design. Designed For Use On Almost Any Wheel With A 10" Hub Up To A 21" Hub. Balancing Stand Has One Level Eye To Ensure Accuracy. Steel Tapered Cone Stoppers Can Be Used With Wheels With An Inside Wheel Bearing Diameter Of 16 To 30mm. The stand has a wide base and a rigid construction meaning most wheels will fit on even if the tyre fitted.