Comparison : Item # SS-4-VCR-6-DM-2, Double Male Reducing Union
Item # SS-8-VCR-6-DM-4, Double Male Reducing Union
Item # 316L-4-VCR-6-DM-2, Double Male Reducing Union
Item # 316L-8-VCR-6-DM-4, Double Male Reducing Union
Item # 6LV-4-VCR-6-DM-2, Double Male Reducing Union