Knurled Modular Threaded Stackable Container.
100mm outside diameter. 20mm, 40mm, & 60mm side wall height containers (with bottom) and expanders (without bottom). Top and bottom can be used to make a 40mm tall container. 3mm walls.
No supports needed. Flip top lid to print the flat top down.
Files can be found here: Knurled Container Modular Threaded Stackable | PrusaPrinters