Type Thickness Top Ring CP1 - Chrome Plated Parallel Faced 3.17mm 2nd Ring CT2 - Chrome Plated Taper Faced Internally Stepped Top 2.38mm 3rd Ring CBEH - Chrome Plated Bevelled Edge with Helical Coil Spring 4.76mm
Type Thickness Top Ring CP1 - Chrome Plated Parallel Faced 3.17mm 2nd Ring CT2 - Chrome Plated Taper Faced Internally Stepped Top 2.38mm 3rd Ring CBEH - Chrome Plated Bevelled Edge with Helical Coil Spring 4.76mm