The file 'Williams Pinball Trough Fix – Anti-Magnetic / Divot Fix 3D Printer Model' is (stl) file type, size is 3.7KB.
This is a trough shim that you can use to help balls from getting stuck in the trough in 90's era WPC / WPC-S and WPC-95 games. No need to remove the trough, just slide it in underneath the balls.
