Totaling 380 pieces, this M2.5 Screw Set is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker tendencies for days on end! M2.5 size screws fit almost all of the Adafruit breakout/dev board mounting holes (2.5mm or 0.1" drill holes). Works great with many Feathers, Adafruit breakout boards, Pi HATs and plates, and more! (Be sure to measure the hole to verify it is 2.5mm or wider) Since they are nylon you can file them down easily, and they don't conduct electricity or interfere with antennas/magetometers.