Specifications of the front hub:    
Brand:    Novatec
Model:    D791SB-CL/A-12
Color:    Black
Number of spoke holes:    28GTS
Type of brake:    Disc (Centerlock)
Type of axle:    Thru axle Ø 12 MM
Axle included:    No
Type of bearings:    Industrial bearings
Average weight (GR):    140
Intended use:    Race
    
Data for spoke length calculations using the Sapim spoke size calculator:    
Total length of the hub (MM):    100
Non-gear side (MM):    28
Gear side (MM):    10
Hub diameter non-gear side (MM):    45
Hub diameter gear side (MM):    45
    
Link to spoke calculator: www.sapim.be/spoke-calculator