2 (two) Duro Bicycle

Tube Size: 26 x 1.50 / 1.75 / 1.95

Tire Compatibility: Designed for tires with outer diameters of 26 inches and widths between 1.50" and 1.95"

ETRTO Compatibility: 559mm bead seat diameter (ETRTO 40-559 to 50-559)

Material: High-grade butyl rubber (synthetic rubber offering excellent air retention and durability)

Tube Wall Thickness: Approx. 0.90mm (standard for general-purpose cycling)

Tube Type: Standard (not heavy-duty or ultra-lightweight)

Application: Ideal for 26" mountain bikes, hybrid bikes, cruisers, and comfort bikes using clincher rims

Valve Type: Presta Valve (French valve; narrower than Schrader)

Valve Length: 48mm (suitable for shallow to medium rim depths, up to ~30mm rim profile)

Valve Core: Non-removable

• Core is permanently crimped into the stem

• Cannot be removed for sealant injection or replacement

• Not compatible with core removal tools or tubeless conversion

Valve Stem: Smooth (non-threaded)

• No threading on the stem exterior

• Cannot accept a lock nut or pump head that requires threading

• Often preferred for smoother pump engagement and cleaner aesthetic

Valve Cap: Typically includes a press-fit plastic or alloy dust cap

Valve Angle: 0° (straight vertical orientation)

Rim Hole Requirement: 6mm diameter hole (standard for Presta valves)

• Will not fit Schrader-drilled rims (8mm) unless using an adapter grommet