A Silver Alfred Knoll ** Viola BowFeaturing a fine quality reddish brown pernambuco wood for the stick, with a fully lined silver mounted ebony frog, with matching button and three piece adjuster, and pearl for the eyes and slide. This Alfred Knoll ** bow features the higher end of the companys production and the result is quite honest. The bow is easy to track while playing, well balanced, and produces an open, clear, and full tone.