. Price for each 10 cm of tube,For example: 1 unit is equivalent to 10cm, 2 units are equivalent to 20cm continuous; 3 units are equivalent to 30cm continuous...10 units are equivalent to 100cm (1 meter) continuous, always with the same logic.
Dimensions:
2.0mm ± 0.05mm Inner Diameter
4.0mm outer Diameter ( It's made with a 4 mm outer diameter, and 2 mm inner diameter, most commonly used with 1.75 mm filament)