[Features] easy to use [product information] Material: Made of high quality PP material, safe and environmentally friendly, sturdy and reliable, durable Size: about 2.1*2.1*4.7cm/0.82*0.82*1.85inch. Small and lightweight, easy to carry and use Design: Can be installed quickly, easy and convenient, improve your work efficiency, save your time and water Perfect Replacement: This shoulder relief valve is a perfect replacement for an old or broken valve and provides good protection for internal parts Wide Applicability: This safety release valve is suitable for 3L/5L/8L backpack sprayers, also can be used for garden sprayer watering part, it is your great choice Name:Valve Packing list (you can get after purchasing one item): 1*Valves 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 1-3cm. 3. Colors may vary from monitor to monitor.