FasTrax Camber/Caster GaugeDisplays Camber: + 0r - 4 degreesDisplays Caster: - 4 to + 12 degreesfor 13'' to 17'' wheels Note: To attach the FaxTrax to wheels without an outer "lip", use 827-91030, No lip adapterFits on both the 827-91000 and the 827-91010.
eBay