Pure nickel, Bullet ends! .010-.046. Fender Original Bullets pure nickel bullet-end strings deliver a smooth feel with reduced finger noise. The tone is rich and warm with abundant harmonics. Our patented bullet end creates a sonic coupling between the string and bridge block, for rock solid tuning stability and increased sustain. These strings are perfect for blues, jazz and classic rock. • MFSKU 0733150406 • UPC 717669853204