J. LaSalle LB-15 Premium Brazilwood Deluxe Student Violin Bow - 4/4 Size Premium, octagonal, resilient brazilwood stick with exceptional balance and flexibility for crystal clear intonation Traditional non-slip sheepskin cushioned wrap gives optimal comfort Full-mounted ebony frog with silver-plated button provides enduring beauty and an incredibly balanced bow feel 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