-Hutchinson tube.

-Composed of high quality.

-Size 20X1.70 / 2.35.

-They may swell to 2.35 for optimum pressure.

-The pressure long stops and pose and a puncture resistance.

-Tube indicated for use in the rear wheel, but also serves to front.

-Auto / Schrader valve.

-ETRTO 44 / 62-406.

-Weight 128 Gr.