Specifications of the front hub: 
Brand: BQ
Model: BQ-FH30508
Color: Black
Number of spoke holes: 32GTS
Type of brake: Disc (6 bout)
Type of axle: Thru axle Ø 12 MM
Axle included: No
Type of bearings: Sealed bearings
Average weight (GR): 162
Intended use: Race / Gravel
 
Data for spoke length calculations using the Sapim spoke size calculator: 
Total length of the hub (MM): 100
Non-gear side (MM): 26
Gear side (MM): 16
Hub diameter non-gear side (MM): 59
Hub diameter gear side (MM): 46
 
Link to spoke calculator: www.sapim.be/spoke-calculator