The new X-Series Carbon Graphite Bows feature graphite sticks mounted with a half-lined Paulus ebony frog with faux pearl slide and eye. All X-Series Carbon Graphite Bows are nickel silver wound with a leatherette grip. This American-made bow is great for students who seek the performance of graphite at a very attractive price. The bow offers the strength and resilience of the standard graphite model. Like all graphite bows, it enhances the tonal quality of stringed instruments.