tremolo-collet-fitting-procedure

Slacken the strings or remove if you intend to replace them
Undo and remove the six screws holding the tremolo assembly in place

Lift off the tremolo assembly and turn it over
Unscrew and remove the existing tremolo collet

Screw in the new Staytrem collet and tighten firmly

Refit the tremolo assembly and six screws and tighten firmly