The Nickel with Steel Core Solid Body U•BASS® Round Wound 4-String Set by La Bella is engineered specifically for Kala Solid Body U•BASS® models equipped with a magnetic pickup. Crafted to meet the needs of electric U•BASS® players, these strings feature a steel core with nickel outer wrapping, offering a well-balanced tone and pronounced mid-range that is great for various playing styles. Designed exclusively for Kala Solid Body U•BASS® with magnetic pickup, this string set ensures precise intonation, smooth playability, and enhanced tonal clarity. Whether you're on stage or in the studio, the Kala Solid Body U•BASS® Round Wound strings provide the consistency and reliability needed for professional performance. Please note, these strings are not compatible with acoustic U•BASS® models or the California U•BASS® series. They are tailored exclusively for the Kala Solid Body U•BASS® with a magnetic pickup, delivering the ideal combination of strength, tone, and playability for serious electric bass players.