Michelin Protek Max MTB Inner Tube - 20 Inch - Schrader Valve (20 x 1.

Punctures due to perforation or nipping impact (edges of sidewalks in the city or rocks for mountain bikes, etc.) are a major fear among all cyclists. Repairing or changing an inner tube is not always a very simple operation. An inner tube must be regularly re-inflated.Size: 20 (406mm) x 1.3-1.8 | STD 48mm Thanks to its uneven design, the MICHELIN Protek Max inner tube undergoes a "compression" reaction in the event of piercing or nipping (the hole closes up naturally), whereas a classic inner tube has an "extension" reaction (balloon effect).This self-plugging effect is enhanced by adding the preventive sealant originally supplied.Image for illustration purposes only