Sanwa JLF-TP-8YT Ball Top Arcade Joystick - Purple Reviews
My adaptive ball top that lets me use my arcade stick with my prosthetic : r/functionalprint
Jason Voorhees Arcade Stick Joystick Ball Top Knob - Etsy
Arcade Joystick Ball Top | Arcade Stick Ball Tops | Zippy Joystick Arcade - 1 35mm Top - Aliexpress
Balltop (30mm) Bubble Original Seimitsu Balltop For Joystick/9 Color Lb-39 Original Seimitsu Bubble Ball Top/arcade Machine Part - Coin Operated Games - AliExpress