The four transparent PETG tubes supplied here are each 50 cm long and have an outer diameter of 14 and an inner diameter of about 10 millimeters. The fixed tubes can now be cut by the user to the required length and bent with the aid of a heat source also suitable. For example, if you use a hot air gun or a strong hair dryer and heat up the PETG tube for several minutes, the material becomes so soft that you can easily bend it to the desired radius and hold it until the plastic cools down hardens curved tube. It does not get any more individual Everything you need can be created here and even adjusted later. Ideally, in addition to a heat gun and gloves you have a silicone rod (or something similar flexible, but heat-resistant) at hand, which one pushes into the tube in advance, so that the soft tube gets no kink when bending. Technical details:- Diameter: 14/10 mm (outside / inside)- Thickness: 2 mm- Quantity: 2 pieces- Length: 50 cm- Colour: Transparent- Material: Plastic (PETG)- Compatibility: Hard tube connectors with 14 mm outer diameter