... water feed adapter 2).plastic POM 3).FDA, NSF certification pipe and fitting ST033-A plastic water feed adapter 1). name: ST033-A ... or customer quests.6). color: the common is the white and the lock is blue, or customer quests.7) competitive price ... , high quality, best service8). we are speialize in producing quick fitting, push in fitting, ro water purifier parts,reverse osmosis system parts.