Kala Solid Body UBASS Flat Wound Strings by La Bella answer Kalas need for a traditional electric UBASS string. Made with a steel core, and stainless-steel flat wire, the Kala Solid Body UBASS Flat Wounds offer that classic old school P Bass tone. Complete with a buttery smooth feel and a balanced tone with a fantastic low end, the Kala Solid Body UBASS Flat Wounds will be as pleasing to play as they are to listen to.