Fender super bullets are the ultimate string forfender trem users. nickel-plated steel makes these anexcellent choice for rock and other styles of music wherethe guitar needs to cut through.fender super bullets are one of the world’smost-popular sets of strings and for good reason.the german-made bullet end fits precisely intofender tremolo blocks, enhancing sustain and stability.that means you get more for your money with superbullets: they stay in tune better and they resonate more.by the way, the bullet end isn’t just for trem users;it also enhances sustain and stability on guitars withstring-through-body type bridge designs.