Product Description Using a revolutionary new polymer to eliminate noise, these German-made springs will silence any sounds resulting from spring tension that might be emanating through your pickups, giving your tremolo-equipped guitar a tighter, crisper sound. Especially at higher volumes, you'll notice the absence of any echo, reverb, or otherwise unintended noise coming from your tremolo springs - ideal for studio recording. Opt for the higher tension heavy duty springs if you're using heavy gauge strings, if you want to simply use fewer springs in your tremolo cavity, or if you like more resistance from your bridge. Sold in sets of three.