Glasser 401H Fiberglass Cello Bow with Horsehair. Fiberglass cello bow with horsehair. Fiberglass bows are a good alternative to inexpensive wood bows. They are more durable, will not warp, and perform adequately for beginning students Glasser Fiberglass Cello Bow w/ Horsehair 401HRegular price: $100.00Sale price: Size: 4/43/41/21/4 Tell us what you're looking for! Immediate Response!