6 DURO BICICLETTA 26x3.50/4.00/4-1/4 TUBO 33MM STANDARD VALVOLA AMERICANA/SCHRADER.
Schrader Valve Smooth Valve Stem A robust and widely-used valve type, also known as a "car valve.". Tube Specifications. Valve Specifications. A standard valve length that fits most rims, ensuring accessibility for inflation tools.