Used this to remove a broken speaker jack piece from my computer. I'm confident that they'll work exactly the way i intended them to. It's important to remember when buying tools that cheaper isn't better, it's just cheaper.

Chuck is clunky and not smooth to tighten/loosen. The pin vise was cut wrong.

Not happy with this product in terms of functionality. It's usable, but just barely. The case for the bits is also garbage. Under optics, the manufacturer has an interesting idea of sharphand drill is completely worthless as well. Cheap chinese junk.

Bit holder is off center. Small drill bit is lodged between the sliding portions of the case so its bent. The collet that holds the bits leaves a lot to be desired and doesnt close all the way. It takes a lot of force to open so you need to be careful...  Read More

Sizes are not accurate at all. Drills 74 thru 80 are all the same size! Looks like they sorted these by length, not diameter.