Kala KA-BASS-5 Metal Round-Wound 5-String U-Bass String 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 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. Fits all Round Wound set up Kala