Park Tool TS-4.2 Professional Wheel Truing StandPark Tool TS 4. 2 Professional Wheel Truing Stand. The Park Tool TS 4. 2 Professional Wheel Truing Stand is designed to fit a wide range of hub wheel and tire combinations with room to spare utilizing a wider base structure and larger calipers. More accurate and easier to calibrate the versatile TS 4. 2 is solidly built to accommodate and self center nearly any diameter wheel 16" to 29" and any tire width up to 5"+. Both uprights move simultaneously