Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointed

I purchased this set because the idea of a countersink, with a correctly sized tapered pilot hole in one step seems like a time saver. The set delivers on these points as long as you don't need to move the countersink towards the tip to accommodate a shorter screw. The set screws that hold the countersink in place have very little to take purchase on when it is moved onto the flutes of the drill bit. Thus, the countersink has both slipped and wobbled. This set will go in the trash when I receive the 3pc Pro Countersink Set from Rockler. This system uses a much longer sleeve between the countersink and the drill bit allowing you to move the drill within the sleeve and having adequate purchase for the set screws of the countersink.