Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great but expensive

Somewhat of a funky taper on the drill bits, but they work well. Not as adjustable (drill bit length) as I thought or as the packaging would lead you to believe. Finally, these are many times more expensive than some of the cheaper countersinks out there. If you have a "serious" need for countersinking, then this is a good set.