This 1/2" barb Tee X 1/2" MPT is used to connect to any FPT fitting and branch off the poly tube in two directions. Works with any poly tube with an ID of .550 to .600 (17 mm). Works with all our .700 OD and 17mm tubing.
By using a double barb, the tubing is pushed over the barb for a very tight fit.