Hub is suitable for both Shimano splined Road and MTB cassettes, a spacer is included for this

Specifications of the rear hub: 
Brand: BQ
Model: BQ-RH30013
Color: Black
Number of spoke holes: 32GTS
Type of brake: Disc (6 bolts)
Number of gears: HG Body 36.85 MM (HG 11) = suitable for all cassettes (possibly with the use of spacer(s))
Freewheel system:    Pawls (3)
Points of engagement:    30
Type of axle: Thru axle Ø 12 MM
Axle included: No
Type of bearings: Sealed bearings
Average weight (GR): 303
Intended use: Race
 
Data for spoke length calculations using the Sapim spoke size calculator: 
Total length of the hub (MM): 142
Non-gear side (MM): 35
Gear side (MM): 50
Hub diameter non-gear side (MM): 58
Hub diameter gear side (MM): 50
 
Link to spoke calculator: www.sapim.be/spoke-calculator