Combine the high output and dynamic sound of steel with the smooth feel of nickel. Our signature Super Bullets are perfect strings for rock and other kinds of music requiring cutting guitar. Best of all, the patented bullet end creates a sonic coupling between the string and the bridge block, offering rock-solid tuning stability and increased sustain. Fender introduced its bullet-end electric guitar strings circa 1974 under the name ?Super Bullets.? The new string-end design was especially well suited to Stratocaster guitars because the bullet ends fit far more precisely into the tremolo block, closely fitting the circumference of the string channel, and they slipped out easily when changing strings. They were available in pure nickel and nickel-plated steel versions for electric guitar and bronze-wound for acoustic guitars. Although Super Bullets electric strings could be used on many different guitars, they were especially popular with Stratocaster players. Super Bullets existed largely unchanged until the early 1990s, when Fender switched from zinc-plated steel to brass for the bullet ends. Brass had the additional advantage of imparting improved sustain. By the mid-1990s, Fender was offering pure-nickel bullet-end strings dubbed ?Bullets,? nickel-plated steel bullet-end strings dubbed ?Super Bullets, and bullet-end acoustic strings in bronze and phosphor bronze versions. Bullet-end stainless steel strings appeared in the late 1990s. Today, Fender continues to offer its classic bullet-end electric guitar strings in the strong, slender forms of its pure-nickel 3150 Original Bullets, which are ideal for vintage-style tone, and nickel-plated steel 3250 Super Bullets, which offer characteristic tonal power and durability.