Pet Peeve.

I'm ticked off at SRAM. Their 2007 Rival crank requires a 16mm wrench for the self extracting bolt. Who has a 16mm allen wrench laying around? Where can you buy one? (not my local Ace hardware) I know this is the type of thing someone should only have to do once, but I'm chasing down a creak and there's no way for me to take apart the crank bolts. It seems really simple to design parts with commonly sized bolts, but instead I end up needing a 16mm allen wrench and a T-20 Torx wrench. WTF?