CR847 CORE RC Hi Response TC Spring 2.9 - Purple
CR846 CORE RC Hi Response TC Spring 2.8 - Yellow
CR845 CORE RC Hi Response TC Spring 2.7 - Orange
CR843 CORE RC Hi Response TC Spring 2.5 - Blue
CR842 CORE RC Hi Response TC Spring 2.3 - Green
CR841 CORE RC Hi Response TC Spring 2.1 - Red
CR840 CORE RC Hi Response TC Spring 1.9 - White