DT Swiss Competition straight pull black double butted spokes are 2.0mm at each end and 1.8mm in the middle. Sold individually including one brass 12mm nipple. The nipples are a silver colour. Pay £1.80 postage only for the first spoke
These are excellent spokes for building wheels that are strong and lightweight. I rarely use anything else. See my other items for packs of eight Competition straight pull spokes, j-bend Competition, and Aero Comp spokes in straight pull and j-bend.
Use a spoke calculator to check the length you need before buying! I recommend the DT Swiss spoke calculator http://www.dtswiss.com/Home