Also known simply as a Tres, this small Cuban guitar is distinguished by its tapered body and three double courses that are widely spaced out on its guitar-sized fingerboard.6-String Set, 3 CoursesSuggested tuning: G4 G3, C4 C4, E4 E3 or A4 A3, D4 D4, F#4 F#3Plain Steel/Silk & SteelBall-EndsString gauges listed in courses from high to low:1. .012P & .023W2. .014P & .014P3. .011P & .031W