FUNCTION: Helps fix drippers or nozzles after fully inserted into the ends of the water pipe.Easy to install, firmly connected, not easy to fall off SIZE: About 3.50 * 2.00cm. UNIVERSAL BARBED STEMS FITTINGS connect to 4/7mm drip irrigation tubing in a “T” shape. DURABLE: Made of high-quality engineering materials, strong materials, water and chemical resistant to ensure a long service life 100 Pack 4/7mm Drip Irrigation Barbed Connectors Universal Barbed Hose Connector Fits 4/7mm Garden Hose Features: Ideal for watering potted plants Made of high-quality engineering material, durable, strong, water resistant. Quickly and easily connect 4/7mm drip tubing in a “T” shape with these barbed fittings. High quality fitting tubes create a quick and secure leak-proof connection. Easy to install, firmly connected, not easy to fall off. Step 1: Cut the pipe according to your needs Step 2: Install the fitting firmly into the pipe Step 3: Finishing: Specifications: Color: Black Dimensions: approx 3.5 x 2cm. Package Contents: 100 x 4/7mm Barbed Tee Fittings