wheel adaptors

[Mega Masher]

Hi all, just seen theese adaptors on hobbyking that say they are 12mm hex, and I thought, wouldnt these be ideal for banebots wheels as they are roughly 12mm hex.
http://www.hobbyking.com/hobbyking/s...12mm_Hex_.html
Just an idea as ive heard several people say that banebots hubs are too expensive (and I agree).