I picked these because I was going through M3 screws like crazy. Good value for the quantity that I needed. As you can see in the picture though this is how they came out of the package - the top was bulged a bit so maybe some better packaging like each screw size / nuts in separate bags in each compartment. ( Maybe this was a return and opened who knows) either way. Won't be getting this again. I'll be able to measure the size to pick what I need but just a medium size pain in the butt.