Attain the optimum angle of heel.The perfect device for attaining an optimum angle of heel. Black bodies with white engraved numerals and an easy-to-read scale. Mount with included adhesive backing.Key FeaturesProvide accurate visual indicator for attaining an optimum angle of heelBlack bodies with white engraved numerals and an easy-to-read scaleEasily mount with adhesive backBlack indicator ball for easy readingHigh-visibility Saturn yellow tube