Die Grinder Chuck Wrench Problem

[vuldub]

As I run my pneumatic die grinder the chuck gets tighter. So when I use the crappy 7/16' wrench to open the chuck, the blasted wrench bends at the gap. The larger 5/8" wrench can be replaced with regular wrench but the small one has to slip into a narrow space between the chuck and the housing. Anyone have some bright ideas for replacing this lousy wrench?

 

[mikerod]

Bike wrenches are often flat, but they are usually metric. I believe 11mm is fairly close to 7/16. Park tools have a pretty good reputation.


Maybe try this:

http://www.amazon.com/dp/B001B6LJZW/?tag=atomicindus08-20

 

[Rickedstyles]

I always hated that..haven't had to deal with it on my Florida's though...two big flats I use adjustable wrenches on..my angles and long Jet are still a pain..snap on makes tappet wrenches but I don't know if they would spread (Ive had some pretty tight ones)