Comparison : Item # 2047-2-2S, 2047 Internal Pipe Swivel(NPSM)/External Pipe
Item # 2047-4-4S, 2047 Internal Pipe Swivel(NPSM)/External Pipe
Item # 2047-4-6S, 2047 Internal Pipe Swivel(NPSM)/External Pipe
Item # 2047-6-6S, 2047 Internal Pipe Swivel(NPSM)/External Pipe
Item # 2047-6-8S, 2047 Internal Pipe Swivel(NPSM)/External Pipe