< ul >< li > Contains 4 red tremolo springs in total . Length of 62 . 5mm ( 2 . 46inch ). Diameter : 8mm ( 0 . 31inch ). It is recommended to view the dimensional drawing before purchasing .< li > The excellent tension of the spring gives the guitar a tight , crisper sound .< li > Applicable model for most vintage and modern stratocaster strat ST , FR style guitars equipped with tremolo bridges .< li > Material : steel , durability and corrosion - resistance .< li > Easy to Install - No need for other tools , easily replaced and installed to fix in electric guitar , work well .< br >< div > < p >< span > Features : < span > < br > - Polymer covered springs that silence any noise from spring tension that would emancipate through pickups .< br > - Applied to tension a tremolo bridge , easy to install . < br > - Gives the guitar a tight , crisper sound .< br > - Fit for : Fender ST , Floyd Rose tremolo original system .< br > - Strong steel material with tension and elasticity , durability and corrosion resistance . < br > - Make your guitar sound crisper , solve tuning problems , and improve tuning stability . < br > - Easy to Install - No need for other tools , easily replaced and installed to fix in electric guitar , work well . < p >< span > Specifications : < span > < br > - Quantity : 4 pieces < br > - Material : steel < br > - Size : 62 . 5mm ( 2 . 46 inch ) in length < br > - Color : Red