Studio 49 individual contra bass bar, pitch Bb; overtone-tuned rosewood bar with wood resonating chamber. Studio 49 contra bass bars are in the register an octave below the bass xylophone, so they are a good substitute for timpani. Price per individual bar. Purchase mallets separately. Dimensions approx. 23-3/4″ long x 10-1/4″ high x 7-1/8″ wide.