K504 Quick Coupler Elbow 2 points L-type double-pass quick connect push-in fitting pipe quick connector characteristics of higher prices for better quality products: (1) the appearance of white, hard texture, firm flesh, tooth pattern is clear, Bing Chengguo standard, durable material POM material (2) internal seals for food-grade silicone material, with non-toxic, tasteless, good elasticity, the sealing strong corrosion-resistant anti-aging, etc. ④ with blue anti off the snap to take them down (extubation), will not let the tube the possibility of a collapse, to ensure foolproof! Quick connector to use: Remove the blue buttons, 2 hose shear level after insertion, then the buttons placed on it. Without pipe plugs, and the same can be assured. Took out the tube, remove the buttons, then push the tube to fill it hand to withstand the joint port, the tube can be easily pulled out. The two then in charge, do not pipe plug, not the raw material with simple! Convenient! Easy to use! Not easy to prolapse.