Tenor Ukulele. The Triback is one of the most unique of the Kala instruments. The design includes a Solid Spruce top with a strip of Mango between Solid Rosewood back and sides along with an elegant Mangoes on the Tree headstock inlay—resulting in a stunning appearance. Available in a tenor model. Scale Length: 17 inches, Overall Instrument Length: 26.25 inches, Body Length: 11.75 inches, Number of frets: 18, Width at upper bout: 7 inches, Width at lower bout: 9.125 inches, Width at waist: 5.5 inches, Body Depth: 3.125 inches, Fingerboard width at nut: 1.375 inches, Fingerboard width at neck/body joint: 1.875 inches. Case included. Finish: Natural Gloss.