Mahalo - Rainbow Series. Soprano. The World's biggest selling Ukulele, the Mahalo U30 has been totally re-designed and upgraded into this dazzling new range. Sengon Body, neck and fingerboard. Mahogany bridge. Gold Geared machine heads. Graph Tech Canada, NuBone XB compensated Saddle. Aquila Nylagut strings. 12 Frets. 346mm Scale. Includes black carry bag.