• Button Width = 18.02mm
• Button height =19.10mm
• Button thickness at center = 10.62mm
• Shaft hole in button is rounded with opposing flat sides
• Flat side to flat side of hole = 3.8mm
• Round side to round side = 4.3mm
• Other end of button has round hole for machine screw
• These Buttons Fit Hipshot、Grover、Fender、Gotoh、Schaller Tuning Machines
• Suitable for tuner shaft ≤ (L x W) 3.8mm x 4.3mm
• Screws included in the package

Size picture