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.Universal Compatibility: 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.High-Quality Finish: For a flawless look.Double O-ring Hardline Compression Design: Creates a dual-level seal around your hardline tubing.Easily Choose the Right 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.Specification:- Product Type: 4 x 12mm OD Hardline Fitting- Cooling Warranty: 2 Years- Port Thread: G1/4\" BSPP- Material: Brass- Compatible Materials: Only mix with other copper / brass products- Colour: Black