Kala Metal Round Wound 4-STRING U-Bass SetThis unique bass set is constructed of a nylon core with silver plated windings. These round wound strings provide a warm booming tone that the U bass is known for. The strings are specifically constructed for the Kala U bass to provide the player with extreme playability and accurate intonation. They feature lower tension compared to traditionally built bass strings which give them a great feel and makes them easy on the fingers. *Not Compatible with