Features: 1.Adopt of high quality raw materials and professional environmental coating 2.Electroplating process, shiny and bright, roll lace design, beautiful appearance 3.Easy to install, just twist tight the screw 4.Good sealing, with silica gel seal ring 5.Automatic exhaust pressure, is a great exhaust Valve plug in water cooling system specification:Descriptions: This exhaust valve plug adopt of high quality raw materials and professional environmental coating. Electroplating process, shiny and bright, roll lace design, beautiful appearance. Automatic exhaust pressure, is a great exhaust value plug in water cooling system. Adopt of high quality raw materials and professional environmental coating. Electroplating process, shiny and bright, roll lace design, beautiful appearance. Easy to install, just twist tight the screw. Good sealing, with silica gel seal ring. Automatic exhaust pressure, is a great exhaust valve plug in water cooling system. s: Thread : G1/4 , actual outer diameter is 12.9mm Material: brass Surface treatment: chromium plating Seal: with silicone seal ring Diameter: 1.8cm/0.7inch Action: automatic exhaust pressure Quantity: 1 Weight:11g Package Included: 1 x Exhaust Valve Plug Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.