Black freewheel cover can be removed and a roller brake can be fitted

Hubs come from sample wheels from a bicycle factory, so they have been braided in, but have not been ridden

Specifications of the rear hub:

Brand: Shimano
Model: Nexus Inter 8 SG-C6061-8R
Color: Black
Number of spoke holes: 36GTS
Type of brake: Rollerbrake or Rim brake
Number of gears: 8S DI2
Type of axle: Fixed axle 187 MM
Axle included: Yes, without nuts
Type of bearings: Ball bearings
Weight (GR): 1691
Intended use: City

Data for spoke length calculations using the Sapim spoke size calculator:
Total length of the hub (MM): 135
Non-gear side (MM): 33
Gear side (MM): 38
Hub diameter non-gear side (MM): 92
Hub diameter gear side (MM): 92

Link to spoke calculator: www.sapim.be/spoke-calculator