Persian Hammered Dulcimer/Santoor Also called the Santur, it has 3 octaves, 72 strings, 9 right & 9 left courses, carved walnut, movable treble and bass bridges. The metal strings have two gages, in inches: 0.015 plain steel and 0.015 phosphorous bronze wire. Item overall: 35.25" L x 3.0" H x 10.75" W Body: The body is genuine walnut and multi layer with walnut veneer. Soundboard: The soundboard is Finnish birch ply. Tuning Pegs/ Levers: metal tuning pegs End Pegs: There are metal end pegs located opposite the tuning pegs. Bridge: There are 2 side bridges, 9 treble and 9 bass bridges. Tuning: The recommended tuning is Traditional Fifth Interval, see tuning chart in Owner's Guide. Accessories included : One pair of dulcimer hammers, tuning tool, extra string set and this model comes with a gig bag.