Aquila Sets (NEW LAVA ) Series 2015 LAVA SERIES -- Aquila Strings proudly presents the new LAVA SERIES ukulele strings. A Grey-Black string coloured with a touch of mother-of-pearl, inspired by Volcanic Rocks. New LAVA SERIES, naturally inspired by a Volcano, which is an Hawaiian symbol of new life, a respectful homage to the Hawaiian people who made the Ukulele worldwide famous and share their happiness with thousands of people around the world. The LAVA SERIES strings maintain the same identical mechanical, and sound properties of the famous White-Pearl Super-nylgut Ukulele strings.