Triumph Twist Drill Co. 099822 T17C Cobalt Steel Drill Bit Set - 1/16-Inch to 1/2-Inch by 64ths, Bronze Oxide Finish, Metal Index (1-Pack) - Perfect for Metalworking, Woodworking, and DIY Projects

If you're drilling through wood or soft metal, any old titanium drill bit will do the job. If you're drilling through hardened steel, however, you'll never get the job done with cheap Chinese titanium bits. Granted, Triumph bits are expensive, but they'll never let you down. And as an added benefit, they're made right here in the USA.Great product that is durable! I have had Bullet drill bits that have lasted a long time. I had a couple of drill bits break. I was looking for a good set that will last a long time and settled on the Triumph Twist Drill Bits based on recommendations and reviews. I have been pleased and have not been disappointed.Best in class.There is an obvious reason these bits are cheap, they're not from TriumphThe product was fine but we paid extra to get it sooner and it was delivered too late for the main purpose of the purchase.suppose to be high quality bits,bought because of rep,Not cheap but works great on metal.