openSCAD Simple Parameterised Bracket

I wanted a simple one screw bracket to hold a LED transformer in place under my kitchen cupboards. I realised that in future I'd probably need another simple bracket, maybe with 2 screws for something else. So I produced a simple openSCAD parametrised design.

If you chose ABS as the material then it will include pads in the design to improve bed adhesion (I find these increase reliability of my ABS prints). Being ABS they trim off easily afterwards.