Schwalbe AV4 Folding Bike Inner Tube 16 18 inch Schrader Category_Sensors Photochromic lens adjust from clear

Photochromic lens adjust from clear to dark in 7 seconds

135mm quick release

Inner tube (interior) for 26x1

Easily-visible gear position indicator option improves shifting control

AMBIENT LIGHT SENSOR Automatically adjusts screen brightness and LED lights as lighting conditions change both indoors and outdoors

Schwalbe AV4 Folding Bike Inner Tube 16 18 inch Schrader Category_Sensors Photochromic lens adjust from clearSchwalbe AV4 Tube Schwalbe Tube AV4. Reliable, high quality and very air tight inner tubes from Germany's number one manufacturer. All valves are nickel plated and valve inserts are replaceable. Sized for Brompton folding bicycles. Fits ALL tires that are compatible with your Brommie. Fits all of the following size tires: (37 340) 16 x 1 3 8" (28 349) 16 x 1. 10" (35 349) 16 x 1. 35" (37 349) 16 x 1. 40" (28 355) 18 x 1. 10" (35 355) 18 x 1. 35"