Drills are one of those things that vary wildly in quality, and although sometimes how much they cost matters, especially when used for a specific purpose , Cost is not that important for a non-professional DIYer like me. I bought very expensive quick change shank drill bits and they broke or jammed the first time I used them. At this price, this 13-piece set costs just over two dollars and is an incredible bargain. I'm pretty quick with drill bits and I prefer these types of quick change drill bits that have a hex shank on the bottom so I can just pop them into my drill chuck and drill all day. To be clear these are taps and this type of drill can drill holes but is also used to create threads in metal and plastic or to remove dirt and burrs from holes and countersink screws. Made from high speed steel and titanium coated, they should last a long time with proper use. Very nice beats.