1.19years experience,high quality, competitive price. 2.type:Single&Double flared stainless steel sleeve. 2.3.Various size. JINYOU ... Very easy of installing. 3. Perfect watertightness, Anti-rust, leak-proof water, good strength, long life . 4. Double o-ring seal ... of attractive external appearance. 7.JINYOU 304stainless steel sleeves sizeSingle Single flared stainless steel sleeve Size DIA 12,14,16,18 ...