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. Jabon neck. Mahogany fingerboard and bridge. Gold geared machine heads. Graph Tech Canada, NuBone XB compensated saddle. Aquila Nylgut strings. 12 frets. 346mm scale. Includes Mahalo carry bag.