MSA non-electronic cylinder holder assembly for GALAXY GX2 Automated Test System. Does not include regulator. For Use With Model No. 6RPZ6, 6RPZ7, 6RPZ8, 6RPZ9, 6RRA0, 6RRA1, 5EMR3, 6RRA2, 5EMR4,6RRA3, 5EMR5, 6RRA4, 6RRC0, 6RRC1, 2YA40, 2YA41, 2YA39,1HLB8, 1HLB9, 1HLB7, 2TEY6, 2TEY5, 2TEY7, 2TEY8, 2TEY9, 5EMP4,5EMP5