These springs help to set your tremolo arm in a fixed position when inserted into the tremolo arm receptacle prior to installing the tremolo arm. They are used in Custom Shop American Series American Vintage American Standard Classic Deluxe and Road Worn models.
The Fender American Series Stratocaster Tremolo Arm Springs are perfect for guitarists who play the Fender Stratocaster guitar who want to upgrade their tremolo arm springs for a higher level of performance and control.