These flex sections do not have any nipples. They are designed for a clean proffesional installation. These are the same sections we use to make our downpipes. 1 3/4" Diameter Stainless Steel Flex Section $13.78 2" Diamter Stainless Steel Flex Section $17.57 2.25" Diameter Stainless Steel Flex Section $24.30 2.5" Diameter Stainless Steel Flex Section $27.50 3" Diameter Stainless Steel Flex Section $37.20