4PCS Hex Nipple 1" Male x 1" Male Pipe Fittings, 304 Stainless Steel 1 inch NPT Male Threaded Pipe Adapter Fittings Equal Nipples Connectors, Male Straight Connector Pipe Fitting - Amazon.com
Beduan Stainless Steel Pipe Fitting, 1" NPT x 1" NPT Male Threaded, 12" Length Nipple Cast Pipe - Amazon.com
TAISHER 2PCS Stainless Steel Pipe Fittings, 1" NPT x 1" NPT Male Threaded, 4" Length Nipple Cast Pipe - Amazon.com
Stainless Steel King Hose Nipples - 1/4" HB x NPT (316)
Horiznext male thread reducer, stainless steel 304 hex pipe fitting, npt 1" to NPT 3/4" adapter, 1-1/4 to 1 inch o.d. water connector (Pack of 2) - Amazon.com
1 Inch 304 Stainless Steel Hex Nipple (NPT Threaded Fittings)
Amazon.com: Horiznext NPT 1" male thread to 1 inch O.D. barb stainless steel pipe fitting, for connecting 1 inch I.D. air hose tubing, pack of 2 pcs : Industrial & Scientific
Hex Nipple 1 Inch Male NPT - DERPIPE Stainless Steel 304 Threaded Pipe Fitting for Brew Kit, Home Piping Application - Amazon.com