4 GUITAR OR UKULELE MACHINE HEAD BLACK BUTTON

The fixing plate is held in place by two screw holes 25mm apart.

The shaft is 6mm diameter.

The shaft length is 27mm with the string hole 22mm from the base plate.

The base plate is 31.5mm long and 16.5mm wide.

The buttons are 23mm wide.

These are usually fitted to solid headstocks where the tuner comes up through the back of the headstock.