Every now and then you come across something that is worth mentioning. In this case its a set of collet wrenches from Probotix.com. For the record, I'm not associated with Probotix in any way, just a happy customer that thought he should share.

What you get is two double ended wrenches measuring 21.35mm and 30.30mm. Perfect for the Chinese spindles. When I ordered I was kind of expecting some stamped metal pieces that kind of looked like wrenches. These things are 1/4" thick and well made the fit the collet and spindle flat very well.

Bruce