32mm wrench for arcade button nylon nuts. Works on Happ and happ clone buttons. Not sure about other ones but I don't have other ones.

Print instructions

Category: Video Games Print Settings

Printer Brand: Prusa

Printer: i3 MK3

Rafts: Yes

Supports: No

Resolution: .2

Infill: 20%

Filament: KVP Performance Filament PLA grey
Notes:

Printed 10 perimeter walls so this is essentially solid. Overkill perhaps but it works. That KVP is super tough.