Blackout and QBP should have them in stock. International Distributors should be getting them sometime in the next few weeks. Or you can visit the Odyssey store to buy them direct here.
Details:
Same length and thread as the old stock Monkey and Marmoset 3/8″ bolts but with a head to take a 17mm socket (rather than the old 9/16″). This allows you to use the same socket you use for your cassette hub. Broached the centre for a 6mm Allen Key.