I almost sent this thing back, since it didn't fit correctly on my Craftsman 15" drill press.  Once I did some necessary modifications, however, (a couple of washers as spacers, mounting it a little lower on the quill collar, etc.) I was able to get it to work and decided to keep it anyway.  Most of all, I like the versatility this kit adds to my old drill press. I figured I needed a dedicated mortiser clogging up my little shop as much as I need a (square) hole in my head!