For the benefit of those who don't know, what is now known as the "Elininator" was invented by the same John DeRosa who designed the MUSCLECHUCK but sold the patent some time ago, I believe at the time of the patent it was simply called the DeRosa chuck. Unlike the MUSCLECHUCK which he designed and patented later, it relies on a cam gripping just one point of the bit's shank as opposed to an even grip all round giving I'm told a far greater grip than a conventional collet chuck, and both chucks only require an Allen key for bit change.
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Last edited by harrysin; 03-07-2015 at 11:17 PM.