Salco Products (TE4X3S416SF24A) 3-Inch Flanged Stainless Steel Quick Connect Assembly, Black Hypalon Gaskets fits a 4-inch ball valve with four (4) 3/4-inch bolt holes on a 9-inch bolt circle. The quick connect flanged adapter is made out of 316 stainless steel. It features a 4-inch cam groove and 4-inch -4 UNC -2A threads. The 3-inch, quick connect, thread on cap is made out of 416 stainless steel and features 4-inch-4 UNC - 2B threads. The 1-inch NPT plug assembly is made out of 316 stainless steel. The plug assembly includes a 1/4-inch, 18-18 stainless steel, chain of15 links with an approximately length of 19-inches. The thread on cap comes with a 3/8-inch by 3-1/2-inch, 18-8 stainless steel, S-hook, a 304 stainless steel lock ring that connects to a 3/8-inch, 18-8 stainless steel, chain with a 3/8-inch by 2-1/4-inch, 18-8 stainless steel hex bolt, a 3/8-inch, 18-8 stainless steel, lock nut and two (2) 1/2-inch, 18-8 stainless steel, flat washers. Length of chain is 15 links which is approximately 21-inches long. The quick connect assembly is about 9-inches high and comes with Black Hypalon gaskets for the cap and flange. AAR Approval # E-149523. Approved for DOT Stenciled Cars.