Adjustable Flow Control: Rotate clockwise to decrease water output; Counterclockwise to increase; It can control the water flow of different soils well, making it easier for you to manage plants of different habits Durable POM Material: High-quality anti-corrosive plastic resistances clogging and aging; Withstands harsh weather for long-lasting garden use Easy Maintenance Design: Detachable irrigation drills allow through cleaning; Reusable for seasonal drip irrigation parts Water-Saving Efficiency: Controls flow from 0 to 40 L/H; Reduces water waste in greenhouses, flower beds, and vegetable gardens Versatile Compatibility: Fits standard 1/4 inch(4mm/7mm) irrigation tubing, and also for 1/2 inch trunk lines; Ideal for precise watering in potted plants and successfuls, perfect for greenhouses, flower beds, vegetable gardens, and indoor/outdoor drill systems. The drip emitter is widely used in pot and container irrigation, in greenhouses, flower beds, vegetables, herb gardens, seedling, succulent plant irrigation. Especially for small garden potted plants.