Kala Brand Revelator USA Ukulele String Set - KU-REV-WBFModel: KU REV WBF Kala Brand does their best to provide high quality string options for players. For the Kala Revelator USA Ukulele String Set, they have teamed up with two of the best of the best Worth Ukulele Strings and DAddario Strings. They have created a non traditional string set to optimize the tone and projection of the Revelator by using two Worth Brown Fluorocarbon strings for the E and A. The G and C use two DAddario silver plated copper