Wah Wah Tube in F, Black (Item Code: WWTBF) This black wah wah tube produces the pitch of F in a clear tone with incredible sustain. The tone may be modulated by 'thumbing' the sound hole. A great "ambient" percussion sound to surprise and complement the other musicians in your group. Made of aluminum, approximately 15 1/2 inches in length and 2 inches in diameter. Includes a rubber mallet.