Great for any 3D projects requiring a belt. Designed for 3D printings these buckles require no support and include four sizes: ½ inch, 5/8 inch, ¾ inch and one inch. The female end has extra loops for a more permanent lock on the belt material whereas the male end is quickly adjustable. Works well with nylon or elastic webbing.
I iterated on the design quite a few times and this is version 12. If you see any improvements that could be made your comments are appreciated. The files are not scaled versions of each other as belt thicknesses have been accounted for.