Thermaltake introduces the Pacific Series Barb fittings for the ultimate in custom PC water cooling configurations. Finished in black-plated copper, the barb fitting includes a quality O-ring with side printed Tt logo. Choose from: 1/4”, 3/8”, and 1/2" ID barb size, Thermaltake fittings provide a complete solution for DIY enthusiasts and PC builders by giving users ideal mounting, fitting and flow.