Pack of 40 stainless steel spokes and brass nipples.
If you are unsure about what size spokes to order here is an example of what we use with the Mindwheel complete wheels:
Front Street Pro: 3 Cross - 186mm
Back Street Pro: 3 Cross - 184mm
Back Street Pro: 4 Cross - 194mm
West Coaster: 4 Cross - 194mm