Bicycle light holder

Replacement of standart holder (i had one with rubber ring that keeps it in place) to more secure one with bolts. You need two m3 ~15mm length bolts and matching nuts, i used knurl nuts melted in plastic. also take bolt from original holder to screw new one to metal part of torch. I also applied original rubber pad to make it less slippery. Wheel dia should be 23mm or close to that value. 40% infill works very well.
Probably will match this one https://www.amazon.de/Victagen-wasserdichte-Schei