... :Product Character:1, Raw material POM with good performance, and has passed BS WRAS FDA NSF certificate2, ... Our design with good performance: using inner claw to hold the tube well3, ... 20,000 times) 4, Passed 30 kilograms anti-pressure tests, and without any leakageFast fiiting can perform ... our fast fitting POM material with high performance L Shape Male Elbow Fast Fitting