Berimbau, Medium Standard (Item code: BRMS + BRMS-G) 2 octave, 55 inches long bow. The gourd resonator must be tied on to amplify the sound. Includes wooden plectrum, caxixi, and stone. Natural finish. The bow and gourd are made of natural products. It is not uncommon for there to be natural blemishes that occurred during the growth of these gourds and trees.