Amazon.com: Sanwa 6 pcs OBSF-30 Original Push Button 30mm (Each Color of 1 Pcs) - for Arcade Jamma Video Game & Arcade Joystick Games Console (Color) S@NWA : Video Games
Component kit for your arcade with with Japanese buttons – 30mm – TALENTEC
Sanwa OBSF-30 Japanese Arcade Button - Arcade Express S.L.