1、TYPE: This is a male to male expansion joint, the connection length is 5mm/0.2in, and the thread is G1/4" 2、CONVENIENT and PRACTICAL: The computer water fittings is a quick connector mainly used for air pipes and pneumatic tools. Connecting or disconnecting pipes without tools 3、SCOPE of APPLICATION: Suitable for PC water cooling applications to meet your daily computer needs 4、PURPOSE: Using G1/4in internal thread to connect 2 water cooled components together, which is very suitable for putting some three way fittings and drain valves 5、LONG SERVICE LIFE: The computer water fittings is made of copper material, which is strong and durable, and has a long service life. Using sealed O circle, can be tightened by hand Item Type: Water Cooling Fittings Product Material: Brass Product Specifications: Length 20mm/0.8in (including thread), Outer Diameter 17.8mm/0.7in Product Thread: Male G1/4in Product Accessories: White Silicone Sealing Circle (installed) , Nitrile Sealing Circle Black (spare) (white is long life silicone sealing circle, black is high temperature resistant sealing circle) Product Fixing Method: Inner Hex M8 Fixed Product Appearance Treatment: Electroplating, Electrophoresis 1 x Water Cooling Fittings 2 x Sealing Rubber Circle