CORSAIR Hydro X Series XF Compression Fittings are the perfect fit for your soft tubing custom cooling system, machined from solid brass and clad in a range of durable finishes. Compatible with 10/13 mm (3/8 Inch / 1/2 Inch) ID/OD soft tubing and equipped with a ultra-tight compression compression fitting to securely seal your loop. Tech Specs Product Type: Fittings Port Thread: G1/4 Inch BSPP Material: Brass Compatible Materials: Only mix with other copper / brass products Colour: Black Box Contents ? 4 x Softline 10/13 (3/8 Inch / 1/2 Inch) ID/OD fittings