Anton Breton AB-110RS Brazilwood Student Violin Bow - 4/4 Size - Rose Round, resilient brazilwood stick with exceptional balance and flexibility for crystal clear intonation Traditional non-slip sheepskin cushioned wrap with silver-plated button gives optimal comfort Half-mounted rosewood frog with nickel silver button provides striking beauty and superb counterbalance Genuine unbleached horsehair ensures long-lasting durability and superior rosin adhesion 4/4 size violin bows are also suitable for use with 12-13 violas