There is a thread here on Dyno history that states the spokes are 11 gauge, show quality triple chrome plated. I can say that my Kustom Kruiser Roadster has them too ( measures 2.9mm thick ). When getting replacement spokes cut to length, I remove one old spoke from the wheel and measure the length from the inside of the bend below the head to the tip of the threaded end.you can hold the spoke to one on the other side of the hub and eyeball it.I think they would be all the same,on same wheel,on a Roadster. Tips- Before lacing new spokes,apply a thin film of Boiled Linseed Oil to the threads using a Qtip. Best to allow some drying time. For any stuck threads,apply Rust Buster available in a Zoom Spout bottle 4oz. I prefer Mars brand.Have not tried the Supco brand on Amazon.