A "nub" cut from 12mm hardened hex stock, approximately 1-3/4 to 2 inches long. Insert this little tool into a socket or wrench! With this little beauty, you can actually use a torque wrench on your axle! Fits in the under-the-seat tool bag too!
Murphs' offers two choices for the sometimes hard to find Front Axle Wrench!
A 12mm, Long Series Hex key or "Allen wrench".