Glasser, the company that patented the world's first fiberglass bow, offers the standard round fiberglass 1/2 French bass bow that features a half-lined frog with a metal under-slide and an imitation three-part button along with genuine unbleached white horsehair and a leatherette grip. This quality bass bow offers students an excellent alternative to inexpensive wood bows because of their durability and they will not warp.