I have ordered these for some of the 3D printer modifications I make and this set provides a good range of sizes that I need. While they appear to be of good quality, the case is also durable and can likely be refilled and reused. Mine arrived very well packaged, the plastic case was wrapped in a layer of thin foil I assume to protect it from scratches and then placed in a layer of bubble wrap before being placed in a box. More often than not, these other screw kits were lucky enough to have a thin layer of shrink wrap, so I was impressed with the almost over-the-top packaging. I'm not complaining, I was just impressed. Also, at the end of the day it's screws, so if I don't have any problems in the future if they break or something, I'm quite happy and will buy again.
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