iRunning 18 Pieces Drip Irrigation Fittings Elbow Connectors for 1/2" Tubing, Barbed Elbows Drip Parts for 1/2 Inch Irrigation Tubing(0.600" ID), Drip Line Connectors for Drip Sprinkler Garden Systems - Yahoo Shopping
20-Pack) Drip Irrigation Brown Barbed Adapter Coupling Fittings - Fits 1/2” Inch, 17mm .600” ID Drip Tubing - Made In The USA - Walmart.com