Concert Travel Ukulele. The Solid Spruce Top Mahogany line is comprised of a Solid Spruce top and Mahogany back and sides. The Spruce has a clean and bare look that pairs well with the elegant simplicity of the Mahogany. Scale Length: 14.8125 inches, Overall Instrument Length: 24.125 inches, Body Length: 11.125 inches, Number of frets: 18, Width at upper bout: 5.9375 inches, Width at lower bout: 8.25 inches, Width at waist: 4.9375 inches, Body Depth: 1.75 inches, Fingerboard width at nut: 1.38 inches, Fingerboard width at neck/body joint: 1.64 inches. Case included. Finish: Natural Satin.