[Harrison]

1st: Adjustable wrenches are the key to success.

As for allen keys and what not, my bot was definately the worst. There was prolly a combo of random Imperial ("standard") and Metric nuts, bolts, and really anything else.

I would suggest to just choose a unit that you have readily available in your teams shop, and what your suppliers use. Any measurements from FIRST can easily be converted to what you're using.

Just make sure that everything on your robot is consistent.