Bought this tool about a month ago and it has been a smart move. The used Mill that I acquired didn't come with it and the owner had been using it only as a drill so he lost the spline wrench. Didn't know how to acquire one until I saw this on the Grizzly site. A bit pricey for what it is, a stamped piece from a 1/8" flat stock but very effective. Would of bought two if it was cheaper. Who knows, I may loose it too in time.