Comparison : Item # X2402, 1.5" PVC Flex Hose with Ground Wire
Item # X2403, 2.0" PVC Flex Hose with Ground Wire
Item # X2408, 2.5" PVC Flex Hose with Ground Wire
Item # X2404, 3.0" PVC Flex Hose with Ground Wire
Item # X2405, 3.5" PVC Flex Hose with Ground Wire