Chrome-plated fitting for 12 mm metal/acrylic tubes This fitting is a compression fitting which is installed as an attachment to a tube with a 12 mm OD to connect the hard tube to a G1/4\" connector. PHANTEKS hard tube fittings are made from chrome-plated brass with ring caps made from chrome-plated aluminium and come with premium rubber seals. Technical Details: Material: Aluminium (chrome-plated), brass (chrome-plated)Connectors: Thread: G1/4\"Designed for: 12 mm outer diameterSpecification: - Model: PH-HTC1210 - Product Type: Compression fitting - Screw Thread: G1/4 - Thread Length: 5 mm - Supported Tube Size: Hard Tubing OD 12mm - Compatibility Tube: PETG, Acrylic, Brass, Stainless Steel, Copper - Materials Barb: Brass - Ring Cap: Aluminum - O-ring: Viton - Outer Diameter: 20mm - Installed Height: 14 mm - Net Weight: 14.2g - Gross Weight: 20g - Package Dimension: 46 x 46 x 26 mm (W x H x D)