This is one (1) Schwalbe inner tube with a 40mm Presta valve. Maintains air pressure for a good while (thanks to top-notch materials and consistent wall thickness). Super dependable. Tested and true.
Size: 20 x 0.90 - 1.00 (ISO 451mm)
Valve Type: PV
Valve Length: 40mm
Valve Stem: Threaded Valve
Core: Non-Removable
