28x1 5/8x1 3/8 (32/47-622/635) Hermetic Plus AV 40 mm All 0182101 Continental 28", amplifier 32-62228 x 1 1/4 x 1 3/4 37-622, 28 x 1 3/8 x 1 5/8 40-622, 28 x 1.50 42-622, 28 x 1.60 47-622, 28 x 1.75 32-630, 27 x 1 1/4 40-635, 28 x 1 1/2 42-635, 28 x 1 1/2 The Tour 28 Hermetic Plus from CONTINENTAL If your bicycle gets a flat tire on the road and you can't continue, it's best to bring a suitable spare inner tube. This way, you can quickly resume your ride and repair the flat inner tube during your break or later at home. The inner tube must fit! You can determine the correct inner tube size by looking at the sidewall of most bicycle tires. The first two digits of the measurement indicate the width of the tire, and the subsequent digits indicate the outer diameter of the tire in mm. The Tour 28 Hermetic Plus inner tubes are available in various widths for 27" and 28" outer tires. For the valve and the correct length, it's best to use the old inner tube as a guide: the Schrader AV valve on the Tour 28 Hermetic Plus is 40 mm. Width inch 1 1/2 , 1 1/4 , 1 1/4 x 1 3/4 , 1 3/8 x 1 5/8 , 1.50 , 1.60 , 1.75 ETRTO 32-622 , 32-630 , 37-622 , 40-622 , 40-635 , 42-622 , 42-635 , 47-622 Main color black Valve type car (AV) Type/kind Article Valve length 40.0 mm Wheel size 27 " , 28 "