
Seems like a good idea and will likely work for certain applications. I bought these so I don't have to change bits every time I attach steel to buildings. The receptacle jams on the screw and, in my opinion, detaches from the magnet shaft too often. However, it is nice to remove the collar and clean the magnet of metal filings. It's still a few hours away from getting back to the drawing board, but it's well on its way to becoming a worthy product.

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