This instrument features beautifully hand pick rosewood and allows the performer to hand tune individual notes of the bottom three octaves. Specs Include: Honduras rosewood bars are tuned to A=442 with a range from c2-c7. Height is adjustable from 34" to 42" with 4" casters. Frame is constructed of beautiful stained hardwood attached to an extremely rigid metal frame, the rails are built with steel interlocking connectors to avoid sagging. Resonator height is adjustable with indicator gauges.