Specifications of the rear hub:
Brand: Sunrace
Model: Others
Color: Silver
Number of spoke holes: 36GTS
Type of brake: Rim brake
Number of gears: HG Body 35 MM = suitable for old type Race (max 10 speed) and all MTB cassettes.
Type of axle: Drop axle
Axle included: No
Type of bearings: Ball bearings
Average weight (GR): 390
Intended use: MTB - Tour

Data for spoke length calculations using the Sapim spoke size calculator:
Total length of the hub (MM): 135
Non-gear side (MM): 31
Gear side (MM): 42
Hub diameter non-gear side (MM): 45
Hub diameter gear side (MM): 45

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