Description from Fender:
“Brighter Bullets for Any Style: 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.
3250L: .009, .011, .016, .024, .032, .042″