Plastic gen stuff has a smaller spacing for their prongs, so I wasn't able to make this work with the modular system, but otherwise is a straight replacement for the inner gear. Made 2 versions, one for M2 screws, and one for M3 screws (to use with my M3 Parts), both for button socket caps. Print upright, with at least 3 walls (I prefer 5 for functional prints), printing with outer/inner wall order, otherwise you may have to sand and/or deburr the outer edge. Depending on your tolerances, the brim from the supports will probably force you to deburr anyways.

Prongs were taken from this model on by Matt3ry