This is a set of two caddies, the original, and one at 66% scale. The former uses M3 machine screws to attach the handle, the latter uses M2s.

Larger basket measurements: 160mm x 245mm by about 103mm high at the grommet.

Smaller basket measurements: 95mm x 161.65mm by about 68mm high.

If you don't have screws, check out this set of printables.

The larger basket was designed to be about the largest that I could print on a QQ-S delta printer, the length being 245mm. I recommend using wide interior wall lines and a small amount of gyroid infill. Warning: The smaller basket will take over 8 hours to print on an Ender 3 with .3mm layer height. A delta printer can do it in around 3.5 hours.