[Features] Max water flow rate of our drip emitters is 25 gallons-per-hour, suitable for lawn, garden, flower beds, vegetable gardens, herbs gardens, etc. Especially for large gardens. Spray diameter from 0 to 10 feet. Flexible adjustable water flow while using, no matter you want it larger, smaller, or turn off. Our drip emitters can achieve what you need. These drip emitters are ONLY suitable for 1/4 inch irrigation tube with 4mm inner diameter, also can be inserted to a 1/2 inch or larger irrigation tube directly. Make sure soak the end of hose by hot water before connecting. Common matching accessories have 1/4 inch couplings and barbed tees. These drip emitters are detachable and very easy to clean. Don't worry about clogging. [product information] product name: ground plug irrigation sprinkler color: black+blue Material: ABS size:13*2.4cm Packing list (you can get after purchasing one item): ground plug irrigation nozzle 50 Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3mm. 3. Colors may vary from monitor to monitor.