The fender 9250 ultracore bass strings are bassists who want defined articulation strong low end and dependable tuning for regular playing. Built around fenders reinforced ultracore™ high carbon steel core these strings are designed to maintain pitch stability under firm right hand attack and consistent gig use. The hex core construction keeps tension balanced across the set helping notes feel even and controlled along the full length of the neck.a nickel plated steel wrap wire shapes a bright roundwound tone with added warmth allowing your bass to cut through the mix without sounding harsh. Designed for 34 scale electric basses the ball end format uses classic fender colours to make restringing quicker and clearer. With improved durability and reliable feel this .045–.100 set suits players who want a fast response and confident low end without frequent retuning. Made in the usa.