Salco Products (K4NYSWF2A) 4-Inch Flanged Stainless Steel and Nylon Quick Connect Assembly, White FDA Nitrile Gaskets fits a 6-inch wafer butterfly valve with four (4) 21/32-inch bolt holes on a 9-inch bolt circle. The quick connect adapter is made out of 316 stainless steel, and features a 4-inch cam groove. The 4-inch, quick connect, cammed cap is made out of nylon with 304 stainless steel straight cam arms. Features a 1-inch NPT nylon plug assembly with 1/4-inch, zinc plated carbon steel, repair link, and a 3/16-inch by 17-inch stainless steel cable. Cap and flange come with a White FDA Nitrile gasket. AAR Adapter Approval # E-139514, Cap Approval # E-139515, Not Approved for DOT Stenciled Cars.