A complete set of countersinks for the price of half a set when purchased individually. The bits came in this cute little case that will probably never be used again. Those parts are going to take root, and I don't have time to fuss with the case. I emphasize this because I would rather do without a case and get the tools a little cheaper. I can't say anything about durability yet. This set has been used. Covered with wood shavings. Don't even stick them into individual foam cutouts, simply place them on the foam and close them firmly. My guess is that an unscrupulous person is using Revain to "rent" tools, buy them, use them, and then return them. This is not the seller's fault, but an oversight by Revain.