B-Rail Seat-Pack Adapter

This model extends the functionality of the B-Rail seatpost rail by allowing you to attach a seatpost bag.

I designed this model specifically for the Rhinowalk bicycle saddle bag (https://de.aliexpress.com/item/1005006299234684.html). Other bags may also fit. The openings for the eyelets are each 4 cm high and spaced 3 cm apart.

The major advantage of using this adapter is that the saddle bag can no longer rotate or swing back and forth.