6-PACK HARD TUBE COMPRESSION FITTINGS – Includes six EK-Quantum Torque HDC fittings designed for 14mm outer diameter hard tubing used in custom PC liquid cooling loops. COMPATIBLE WITH HARD TUBING MATERIALS – Supports solid tubing such as Acrylic, PETG, Copper, Brass, and Stainless Steel. SECURE COMPRESSION LOCKING SYSTEM – The compression ring compresses the internal rubber gasket to securely hold the hard tube in place and help prevent accidental pull-out. PREMIUM CNC-MACHINED BRASS CONSTRUCTION – Manufactured from high-quality brass with a durable satin titanium finish and sealed with high-quality rubber O-rings. MINIMALIST EK QUANTUM DESIGN – Clean, branding-free exterior with EK Quantum signature cutouts that allow optional aesthetic color rings (sold separately). STANDARD G1/4" THREAD COMPATIBILITY – G1/4" BSP threading ensures compatibility with EK Water Blocks components and most custom PC water cooling hardware., Weight: 0.0440924524 pounds, Manufacturer: EKWB