24mm pushbuttons are NOT the punch and kick buttons on your Fightstick. You'll want 30mm buttons. 24mm buttons are often used for the option buttons found in the back of your MadCatz TE fightstick, the start button on your Qanba Q4. Exceptions to this is the Hitbox, which uses 11 24mm pushbuttons and one 30mm pushbutton for directions, punch and kick. More information is provided via this article - 24mm vs 30mm: Choosing the Right Japanese Arcade Button.