The 1541 Ultimate II+ is a storage solution for the Commodore 64 & Commodore 128 home computers by Gideon Zweijtzer. The main cartridge unit comes with a injection molded case, but the tape adapter does not. These 2 STL files create a snap together (though also has two screw holes) case to match the molded one. This isn't my final design. I sort of got it to snap together and that was good enough for me and I moved on to other projects. If anything isn't right, like if it doesn't fit in the back of the C64 or a real tape adapter edge connector doesn't fit on the protruding circuit board, let me know in the comments. The 1541 UII+ project can be found here: http://1541ultimate.net/content/index.php