Clear Blue Ball Top for joysticks made by Sanwa (JLF-TP and JLW-TM) and Seimitsu, also fits onto the UltraStik 360. Diameter: 35 mm (1.378 inch). This is the exact OEM Professional Sanwa Joystick on the Mad Catz Limited Edition Tournament Edition Street Fighter IV/4 Arcade Joystick/FightStick.