CGMS spades are machine from billet copper, and plated with a rhodium flash over silver plate.
The CGMS R XS has a 0.160″ wire hole. The CGMS R M has a 0.215″ hole.
The CGMS R XS is replacing the CCMS R1. Orders for CCMS R1 will have the CGMS R XS substituted at the same price.