J. LaSalle LB-12 Brazilwood Student Series Violin Bow - 4/4 Size Round, resilient brazilwood stick with exceptional balance and flexibility for crystal clear intonation Traditional non-slip sheepskin cushioned wrap gives optimal comfort Half-mounted ebony frog with silver-plated button provides enduring beauty and superb counterbalance Genuine unbleached horsehair ensures long-lasting durability and superior rosin adhesion Bow hair may be loose and can be easily tightened or loosened by hand with the nickel plated screw