Rim Specifications:
Brand: Rigida - Ryde
Model: AS32
Color: Silver
Size (Inch/MM): 507X25C
External width (MM): 30
Internal width (MM): 25
Average weight (GR): 514
Material: Aluminium
Single-walled / Double-walled: Single-walled
Single eyelets / Double eyelets: No eyelets
Number of spoke holes: 32GTS
Spoke nipple size: 14G
Brake surface present: No

Data for spoke length calculations using the Sapim spoke size calculator:
Internal diameter of the rim (MM *Not ERD*): 487
Rim thickness (MM): 2
Number of spokes in the wheel: 36
Number of crossings gear side: of your choice
Number of crossing non-gear side: of your choice

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