I ordered a set of these bits and the first one I used was bent. The second one I used barely cut the plywood 3/4 and the countersink wouldn't stay tight no matter how hard you tightened it. The first time I used the stamp it stuck and I had to take it apart to relieve the spring, after which it stuck every time. I decided to return it and get a new set in case it was a mistake. Well...when I got my second package I opened it up to use the smallest bit possible and after aligning and installing it in the drill press the bit was bent and the hex nut didn't want to stay on. The first time the plywood was cut 3/4 on the drill press, the drill bit broke. Decided to check the stamp and it didn't even go in so I'm sending the package back too. Bought for the price honestly but definitely not worth the money or hassle of sending it back. It is better to take a decent set in parts.
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