Review on DEWALT DW1720: Precision Brad Point Set for Woodworking - 6 Piece Kit by Michael Freemason

I bought a set of DeWalt bit tipped drills a few months ago and used them for the first time yesterday. I was very disappointed - the first bit I tried (1/2 inch) rocked so hard that it couldn't be used. I've tried it in two different drill bits and on a drill press with the same result. The drill shank is wrong. I suspect the machining to reduce the diameter of the shaft to fit small chucks was faulty. I have other DeWalt tools that I am very happy with and I hope this is the exception but bottom line is I have a useless part. I expect better quality from DeWalt.