... fittings,such as elbow,tee,cross,coupling,nipple,plug,union,plug.... stainless steel quick couplingJINYOU stainless sleeve pipe fittings1. Very easy of installing. 3. ... of attractive external appearance. 7.JINYOU 304stainless steel sleeves sizeSingle Single flared stainless steel sleeve Size DIA 12,14,16,18,20 ... ,25,32MM Double flared stainless steel sleeve Size DIA 12,14,16,18,20,25, ...