Standard Duty Tube 1.5 mm TR4Mitas Tubes are made of a high-quality Butyl Compound.Premium valve construction galvanized STEM + 2× washers, metal + rubber cap.New packaging: All our tubes are retailed in individual pouches (packed in nitrogen reach atmosphere for extended shelf life).Thickness: 1.5 mm (SD: Standard Duty).Valve type: TR4. Generic Image: Product sample - please check the parts description and specifications for the individual details.