Double nipple set for connecting two oxygen hoses (fuel/oxygen), pack = 1 set.
for oxygen:
High-quality CNC machined brass fitting as a double nipple version according to DIN 8542 / EN 560. Input thread G 1/4" RH adapted to output thread G 1/4" RH with 45° inner cone on both sides and spanner size 17.
for acetylene/propane:
High-quality CNC machined brass fitting as a double nipple design according to DIN 8542 / EN 560. Input thread G 3/8" LH adapted to output thread G 3/8" LH with 45° inner cone on both sides and spanner size 19.
Left-hand thread versions are called "LH" and have a groove on the key insert.