This little goodie is designed to fit into a leather pouch suited for a Victoinox Cybertool lite. It's intended to carry 21 X 4mm driver bits, 1 X Micro SD card, and a Micro USB wifi adaptor (or mouse receiver etc) It also houses 5 X 10mmX2mm Rare earth Neodymium magnets on the base. All things I use on a job, alongside my Cybertool. I purchased a second Leather belt pouch to house it. As usual, autocad and Inventor files are included for the remix specialists. THIS DESIGN IS FOR ABS!!! As with many of my designs, tolerances are tight, PLA will not cut it for accuracy on this one. This design can and will show up any calibration issues with your machine, so please check carefully and methodically before complaining that this doesn't fit. You will need a couple of very short (5mm long X 3mm diameter) stainless screws. They should cut their own thread as they are screwed in (not too tight!) I gave this a very quick wash in acetone once the 3mm screws were set in place, and left to dry in a room temp area. This helped secure the bond between layers, and gave me a chance to correct alignment issues with the lid. any more questions - leave a comment - just please, no trolling this time, it gets really old, and makes me regret uploading projects.