... 2.Any size and color are OK 3.FDA,CE,LFGB,SGS approved non-toxic hookah silicone hose Advantages for silicone hose ... the U.S. FDA, Germany LFGB or SGS,RoHs, Reach,CE etc.,(8) Medical, Food and other GradeApplications for silicone hose ... Pharmaceutical, Biotechnology, Food and Beverage ,Aerospace ,Cosmetic ,General laboratory etc. non-toxic hookah silicone hose