Edit: The company contacted me on August 28th asking for my address and saying they would send another set. Guess what! Never sent! This is a crappy product from a crappy company. I ordered it to drill miniatures printed in resin. After drilling 3 holes, the 1.2mm drill bit broke out of the vise. I switched to 1.1mm and again after drilling 3 holes it broke. I didn't use the vise a second time to try to relieve the pressure. They arrived yesterday and will be sent back as soon as possible. Most bits are unmarked and come in a sewn plastic bag. They're still covered in metal shavings, so be careful when trying to get them out of the bag. Unmarked bits are very slow compared to the bits included in the packet. They may also not be included or called scrapers rather than bits. It is quite difficult to tighten the screws that hold the plastic parts on top of the vise to keep the object to be drilled stationary. It took me over 20 minutes and a lot of effort to make each hole repeatedly to keep the plastic pieces from turning. All in all, this is a terrible set.