-These buttons fit Grover, and a little bit loose for Gotoh tuners.
-Guitar tuner machine heads White/Red/Black buttons 6 pieces
FR04W=White
FR04R=Red
FR04B=Black
size:
width 21.5mm =0.85"
height 16.0mm =0.63"
thickness 8.0mm =0.32"
Hole:
4.0mm(0.16")x3.5mm(0.14")