The Marwe 15B wheel axle bolt is intended for use with 100x40mm wheels. The 15B refers to the spare part number for this specific piece which is also found on the exploded view drawings that come with each pair of Marwe skis.
Thread length: 55mm
Axle diameter: 6mm
Wrench socket size: 10mm
We apologize, but this description is only available in English at the moment.