Easy to print model, designed for 32gb Sandisk Cruzer Blade USB but would probably work with the other storage sizes too. The chip comes from the inside of the two halves of the original sandisk case and clips into the new 3d printed one. Recommended to print with multicolour, could add name on the back? Check my profile for the other USB design featured in the photos which is a sliding model and a bit bigger, same story though.