Bought these a few months ago knowing I was going to need sharp drill bits for a spring project. Well it's a joke. I thought I was going insane when almost every piece was bent. I thought my drill chuck or spindle was defective. But I tested it with some 25 year old Craftsman bits and the drill didn't run out. What a waste of time and money. Listen to me and other reviewers and stay away from this garbage. Bought a sharpener and brought all my bits back to life. Even the old set of Harbor Freight bits are like new, but best of all, they aren't bent!