I am planning on ordering some cone wrenches for my hubs. What are the 2 sizes, generally, for the locknut and cones on a Velocity w/ Origin8 Hubs Wheelset?

i think its 15 and 17 i have to double check

+1, I just tightened my cone nuts couple of days back.

thanks

so do I need two of each if I want to tighten them down?

Yup, I tried to use a normal wrench but it was too thick. They are quite cheap, you should own them in case your cone nuts are loose.

yea Ive broken two locknuts over the past year because they werent tightened down all the way, thus snapping in half as I tightened my wheel in the frame.