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Bkools 12mm thru-axle is a sophisticated accessory that lets you use Bkool trainers with bicycles that have a 12-mm thru-axle system on the rear wheel.
This accessory has been designed to fit perfectly in the arms on the Bkool trainer (Bkool Pro and Bkool One), turning it into the perfect solution for using your trainer with this type of bicycle.
If your bicycle has the standard axle, simply use the skewer included in the Bkool trainer box. If, however, your bicycle has a system like the one in the image, youll need Bkools 12-mm thru-axle.
Bkool offers three different models for this accessory. Which one you need depends entirely on your bicycle (brand and model). To see which one you need, see the table. If you have any questions, contact us through the help section.