The material chosen for the plywood is specially selected for musical instruments (with a spruce plywood top and flamed maple back). It has 4 single machineheads in brass.Rudolph basses are known for a very good sound.string length: 105cmbody length: 110cmtotal legth: 182cmupper bout: 52cmwaist: 38cmlower bout: 66cmweight: 8 8kg