This is the finest made fittings we have ever offered! This is the World&s First Compression Fitting Designed For Tygon 3603 12" with 18" Wall This is a replacement fitting for any product that use G 14" threads These will screw into any available port Learn the name; Bitspower Premium water cooling products! Features Special Design for PC Water Cooling Perfect Surface treatment TRUE Hi-Flow Hidden O-Ring Design World First Compression Fitting Designed For Tygon 3603 12" Wall 18" Specifications Material Hi Quality Brass with Black Sparkle coating Thread G14" Tubing Size ID 12" With OD 34"