Google Translation :
CM103: 5/8" O.D COMPx3/8" O.D COMP
CM803: 5/8" O.D COMPx1/4" O.D COMP
CM503: 5/8" O.D COMPx1/2" O.D COMP
CM603: 5/8" O.D COMPx1/2" OR 7/16" SLIP-JOINT