Nylon core with Silver-plated windings</br>Specifically constructed for use with the Kala U-Bass</br>Provides player with extreme play-ability</br>Warm?? powerful sound with clear note articulation</br>String construction and gauging gives player very accurate intonation "auges .050"?? .065" .095"?? .110" .125""</br></br>Product Description</br></br><b>Kala KA-BASS-5 Metal Round Wound String Set</b> <p>This unique bass string set is specifically constructed of a nylon core with silver plated windings. These round wound strings provide a warm booming sound that the U-Bass is known for. They feature lower tension compared to traditional built bass strings?? making them easy on the fingers with a great overall feel.</p></br><br/>http://www.amazon.com/gp/product/B01D1NWINYY S