All, well the ones that I used, of the Vicmark keys broke at the plastic part. I found some 'loop' T handles at the local Ace Hardware store, and have been using them for a long time. I wanted more of them since I am planning on having play dates, and they were no longer carried at the store. Went to a local Bearing store, Kaman Industrial, and ordered some Bondhus loop hex T cush grip 9 inch wrenches, part #46576. I have cut off about 3 or so inches, and it has a bright red plastic dip handle. they will out live me, and if I drop it in the shavings, the red handle makes it much easier to find and accidentally throw out... They apparently only come in 2 packs, so I may have to buy another chuck or two, or three....
robo hippy