The Continental R28 touring tube is designed to fit touring bike wheels with a size that is between 700 x 32 - 47c

Specifications
Material: butyl rubber
intended use : touring, trekking
Compatible sizes (inches): 27 x 1 1/4 to 28 x 1.75 x 2
Compatible sizes (ETRTO): 32 - 622 to 47 - 622 | 32 - 630 to 42 - 635
Product ID: 0182001
Valve length: 40 mm
Valve standard: AV (Schrader, Autoventil)

Mfr Claimed Weight
170g