Thermaltake Pacific C-PRO G1/4 PETG Tube 16mm OD Compression - Black (6-Pack Fittings) The Pacific C-Pro Series is a revolution in fitment design. It simplifies the process of setting up a liquid-cooling loop and provides a seal that outperforms traditional compression fittings. By using 4 preinstalled O-rings and an overhauled design, the C-Pro Series is the new standard in fitment technology and it is exclusive to Thermaltake. TT Premium To continue achieving the corporate mission of delivering the perfect user experience, Thermaltake developed "TT Premium" with the essence of combining supreme quality products with a new logo design. TT Premium is far more than just a guarantee of quality. Behind the name, it represents the passion in DIY, Modding and Thermaltake''s desire to be the most innovative brand in the PC hardware market. To satisfy the demand of the high-end PC users, TT Premium follows its core values of Excellent Quality, Unique Design, Diverse Combinations and Boundless Creativity to provide a high performance PC product for every enthusiast. Tt LCS Certified Tt LCS Certified is a Thermaltake exclusive certification applied to only products that pass the design and hardcore enthusiasts'' standards that a true LCS chassis should be held to. The Tt LCS certification was created so that we at Thermaltake can designate to all power users which chassis have been tested to be best compatible with extreme liquid cooling configurations to ensure you get the best performance from the best features and fitment. High-Flow and Leak-Free Structure The C-Pro Series compression fittings are custom made for simplify the installation of PETG tubing. They are designed to work in tight spaces without compromising the compression seal or impacting the flow of coolant. The C-Pro range also features four rubber O-rings instead of the traditional two, this creates a more secure seal and more reliable performance. Exclusively Designed Open-End Wrench The included wrench with double-ended design is specially crafted for Thermaltake Pacific Series fittings. The smaller end is used to grip the C-Pro Series compression fittings, providing an easier and faster way to turn the fitting. Easy Installation, Game-Changing Design By rethinking the traditional compression fitting design, this new concept makes it easier than ever to install custom liquid-cooling loops. Remarkable Expansion Thermaltake offers a full line of Pacific Series components for enthusiasts to build up aesthetically-superior water cooling systems by incorporating externally-modular upgrades for their chassis.