These are some small skadis containers in different lengths. One container is one solid part. Neither  do they require any separate hooks nor supports while printing. 

Use cases

I use the containers to keep my different screws and springs sorted, but in the end you could use them for whatever you like. 

The walls are 2,5 mm thick, so the usable length inside would be the outer length (40 mm, 60 mm or 80mm) minus 5 mm. The inner height of all of these boxes and their maximum depth is 35 mm.

Nomenclature 

The first number represents the width of the box in millimetres. 40 mm is one full unit, after that the hook pattern repeats itself. 

The second number indicates wether the hooks are placed high or low (back view, left to right).

Printing

You don't need any supports or extra hooks for this print. They are supposed to be printed in the orientation thy are uploaded. Depending on how well your filament sticks to your plate, you might want to add a brim for extra stability. 

Inspiration 

Shape and print orientation are inspired by SMACKMAX' Skadis Pockets / Bins / Tool holder. You should definitely consider printing those if you need some bigger containers.