1.19years experience,high quality, competitive price. 2.type:Single&Double flared stainless steel sleeve. 2.3.Various ... , contributing greater security. 5. Antielectrolysis ring of maximum effectiveness. 6. Design of attractive external appearance. 7.JINYOU 304stainless steel ... for fastening, joining, or reinforcement ,such as for facilities of cold water, sanitary hot water, and heating ect. Double ...