... Design 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, ... Used for fastening, joining, or reinforcement ,such as for facilities of cold water, sanitary hot water, and heating ect. stainless steel bushing for pipe ...