Merit Brass - Brass Pipe Nipple: Threaded on Both Ends, 2″ OAL, 1/2″ NPT - 02204758 - MSC Industrial Supply
SUNGATOR Solid Brass Pipe Fitting, 1/2" x 1/2" NPT Male Pipe, Hex Nipple, For Use with Oil, Water and Air Lines Made from Copper, Brass or Iron Pipe (2-Pack) - Amazon.com
Merit Brass - Brass Pipe Nipple: Threaded on Both Ends, 3″ OAL, 1″ BSPT - 04881744 - MSC Industrial Supply
Brass Pipe Nipples - 1/2" x 10" NPT (LF)
Pipe Nipples – Merrill Manufacturing
30mm Copper Pipe Nipple, For Automobile Industry
Red Brass Pipe Fitting, Nipple, Schedule 40 Seamless, 3/4" NPT Male X 6" Length: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific