Description 1. Adjustable Stream Control: Easily adjust the water stream of each dripper by rotating the red cap. Turn it clockwise to decrease the stream and counter-clockwise to increase it, allowing you to customize the watering for different plants and save water. 2. Perfect Fit for 4/7mm Hose: These drippers are designed to connect perfectly with standard 1/4 inch (4/7mm) irrigation tubing. The barbed connector ensures a secure and leak-free connection, making your irrigation system installation quick and effortless. 3. Sturdy Plastic Material and Specific Dimensions: Crafted from high-quality engineering plastic, these drippers are built to last and resist corrosion. Each single dripper measures approximately 4.7 cm (1.85 inches) in length and 1.55 cm (0.61 inches) in width, providing efficient watering in a compact design. 4. Prevent Clogging with Detachable Design: The drippers feature a detachable design, allowing you to easily disassemble and clean them. This helps prevent clogging from dirt or debris, ensuring a long-lasting and reliable watering solution for your plants. 5. Wide Application and Complete Set: Ideal for a variety of applications, including automatic watering systems, gardens, greenhouses, flower beds, and potted plants. This package includes 20 pieces of adjustable stream drippers, providing ample units to build or expand your drip irrigation system. Package list 20pcs Adjustable Stream Drippers