For those who do not want to use hoses or PETG pipes, the PMMA tubes from Bykski offer an excellent alternative. The solid acrylic plastic tubes can be cut to the required length and bent into the desired shape using a heat source, such as a hot air gun. The tube has a length of 50 cm, an outer diameter of 14 mm, and an inner diameter of 10 mm. Technical specifications: Material: PMMA, Color: Satin, Outer diameter: 14 mm, Inner diameter: 10 mm, Length: 50 cm.