Specifications of the front hub:
Brand: Union
Model: QR
Color: Silver
Number of spoke holes: 36
Type of brake: Rim brake
Type of axle: Drop axle
Axle included: YES 
Type of bearings: Ball bearings
Weight (GR): 142
Intended use: MTB - Tour


Data for spoke length calculations using the Sapim spoke size calculator:

Total length of the hub (MM): 100

Non-gear side (MM): 16

Gear side (MM): 16

Hub diameter non-gear side (MM): 35

Hub diameter gear side (MM): 35

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