Two drill bits that should be 0.35 and 0.40 can hardly be called a drill bit except that they have a flute. Both have a flat tip. The drill marked .03 is actually .35 in diameter (and has a tip), and the drill marked .35 is actually .44 in diameter. There is no .30 drill in the pack. 0.45 and 0.50 seem fine. I did not test the other drills for accuracy as I primarily needed the .30 - .50 sizes. This item is non-refundable. I cannot recommend this product.