Anton Breton AB-110BK Brazilwood Student Violin Bow - 4/4 Size - BlackRound, 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