Carbon fiber wrenches!?!
1) Huge head area = clearance issues
2) Expensive, and this from a guy with a top box and roll-away full of Snap-On jewelry
3) Supposed to wear gloves to prevent carbon splinters
4) Can't use a cheater bar to increase leverage
Light, yeah, but I can't remember a time when even my scrawny arms were exhausted from swinging a wrench all day
Shark jumping, anyone?