1、 1. 100% brand new and high quality. High hardness, good strength, durable. 2、 2. Ideal replacement for the broken or old one. 3、 3. Easy and convenient to install. 4、 4. G3/8'' thread, suitable for electric sprinkler and backpack fire sprinkler. 5、5. All parts rounded smooth, avoids hurting your hands. Features: 1. 100% brand new and high quality. High hardness, good strength, durable. 2. Ideal replacement for the broken or old one. 3. Easy and convenient to install. 4. G3/8''  thread, suitable for electric sprinkler and backpack fire sprinkler. 5. All parts rounded smooth, avoids hurting your hands. Specification: Condition:100% Brand New Material: Plastic Color: As picture Outer diameter of thread: Approx. 1.6cm / 0.63 in Size: Approx.23*12.5*7cm / 9.06*4.91*2.76 in Package list: 3 * Fire Sprinkler Head Shield Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.