Replace, repair, and restore. Set of 12 tremolo arm springs for use with American, American Vintage, American Standard, Classic, Deluxe and Road Worn series Stratocaster models. This spring helps set your tremolo arm in a fixed position when used with any Fender American series or American Standard series tremolo. Simply insert spring into tremolo arm receptacle prior to installing tremolo arm. • MFSKU 0994931000 • UPC 717669506995