HPMAISON 150pcs HSS Mini Twist Drill Bits Set 0.4mm-3.2mm, HSS Shank Drill Bits Kit Micro Twist Drilling Tool Helicoidal for Wood Plastic Jewelry Nuts Amber DIY with Storage Box

Well you get what you pay for! Some of the drill bits are fine and work well, others haven't been sharpened properly and don't have an even tip, or the tip is way off center. There is also a wide variation in the actual sizes of any one particular drill size, the tolerance is rather wide, always check each drill before use. Some drills also unwind when you try to use them which is annoying. The storage box is quite useful and can be refilled with better quality drills later.