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 collar; Patented design requires no glue or tools for installation; Low insertion force makes installation quick and easy; Drip-Lock technology ensures lower friction loss for better water efficiency; Built tough fittings made from UV-resistant ABS, stainless steel and EPDM seals; Drip-Lock Specifications: Burst pressure exceeds 100 PSI; Operating pressure: 0-50 PSI; Hydro-Rain 1/2" Drip-lock End Cap is used to close off any line of 1/2" tubing. The garden hose thread cap will unscrew allowing easy clean-out or draining of the line. 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.