技術仕様 Material: Extruded acrylic - Inner diameter: 12 mm - Outer diameter: 16 mm - Length: 500 mm (19.5") The package contains 2 pieces of tube only. Please purchase EK-HD Adapter or EK-HDC compression fittings separately! For easier installation we recommend wetting the gasket (O-ring) using drops of water prior to installing solid tube.