Check the listing for details. Hydro-Rain 1/2" Drip-Lock Coupler. Condition: New. Listed at 8.81 USD. HydroRain has made drip irrigation even faster and easier with the Drip-Lock removable/reusable fittings for low pressure 1/2" poly tubing with .630" - .710 (16 - 18 mm) outside diameter tubing. The oversized seal and durable gripping teeth will hold almost any brand of half inch poly tubing and dripline.Drip-Lock Features:Fittings are releasable and reusable with the Drip-Lock release collarPatented design requires no glue or tools for installationLow insertion force makes installation quick and easyDrip-Lock technology ensures lower friction loss for better water efficiencyBuilt tough fittings made from UV-resistant ABS, stainless steel and EPDM sealsDrip-Lock Specifications:Burst pressure exceeds 100 PSIOperating pressure: 0-50 PSI The 1/2" Drip-Lock Coupler is used to connect 2 pieces of 1/2" poly tubing or dripline. Hydro-Rain is the commercial division of Orbit so when you purchase a Hydro-Rain product, you will get all of the same reliability and product confidence you have come to expect from Orbit.