UNIVERSAL LOCKING DRIP TAPE FITTINGS : 16 and 17 mm (1/2") Barbed Fittings FIT MOST MAJOR BRANDS 1/2” DRIP TAPE TUBING : Barbed Drip Fittings with twist lock are used in the installation of drip line with .600 ID x .700 OD drip tubing. Used by home gardeners and professional alike, these fittings are made of high-impact plastic, and are available in a variety of configurations. Using a barb, two pieces of drip line or drip tubing may be pushed over the barbed sides of the fittings for a very tight fit. Features Special, extra lock twist and barb design for secure and easy installation without glue or clamps Fits brown or black drip tubing, PC drip line and polyethylene drip tubing with .600 ID x .700 OD or .550 ID to .600 OD - QUALITY CONSTRUCTION - Made of high-impact, high-strength, UV-resistant plastic for extended operation in harsh conditions Available in a variety of configurations Products specifications Operating pressure: up to 30 PSI