Cello Bow 3/4. These bows feature our highest quality carbon graphite sticks. The bows are mounted with the highest quality German-made ebony frogs from Paulus. The nickel silver mounted frog features a flamed abalone slide and double eye. All of our carbon graphite bows are nickel silver wound, and are high-gloss black with premium stallion unbleached white horsehair. Cello Bows fall within a weight range of 77-83 grams. All Glasser Bows have a lifetime warranty.