This bundle includes four Hydro X Series XF Hardline Fittings (12mm OD) and four Hydro X Series 90 Degree Rotary Adapters. CORSAIR Hydro X Series XF Hardline Fittings are the perfect fit for your rigid tubing custom cooling system, machined from solid brass and clad in a range of durable finishes. Compatible with 12mm OD hardline tubing and equipped with a double o-ring compression seal for a secure fit. Standard G1/4” BSPP threads provide universal compatibility with all CORSAIR water blocks, pumps and radiators. Machined from solid brass for superior quality and durability. A double o-ring compression fitting design creates a dual-level seal around your hardline tubing. Fits 12mm outer diameter hardline tubing. Compatible with a wide range of additional CORSAIR Hydro X Series adapters, including rotary 90°, 45° and Y-splitter. Port Thread: G1/4" Material: Brass Compatible Materials: Only mix with other copper / brass products CORSAIR Hydro X Series XF Fitting Adapters make it easy to add 90° angles to your custom cooling system's tubing, whether you use hardline, compression or barbed fittings. Machined from solid brass and equipped with a securely sealed rotation mechanism, XF Fitting Adapters are clad in a range of durable finishes to match your system. Standard G1/4” BSPP threads provide universal compatibility with all CORSAIR XF Fittings. Machined from solid brass for superior quality and durability. Securely sealed rotation mechanism allows you to easily add angles or splits to make the perfect tube runs. High-quality polished finish for a flawless look. Optimized for high flow rates to minimize fitting flow resistance and improve performance. Port Thread: G1/4" Material: Brass Compatible Materials: Only mix with other copper/brass products Model: TR-08138-08173