This tool fits over the fork preload adjustment knob on WP XPLOR 48mm forks (Knob pictured). This is required when disassembling or servicing the forks.
This model is beefy enough to be functional when printed from even the cheapest PLA. That said, I always recommend printing functional tools like this from PETG as it will show some deformation before failure rather than just shattering like PLA. Recommend printing with 4+ perimeters and 50%+ infill.
The author hasn't provided the model origin yet.