Product Detail 4/4 Cello Bow - Blended Kevlar Core - Stunning Graphite Diamond Weave Finish - Brown Tint Traditional Frog made from Xebony Engineered Ebony by Walter Paulus - White Mother of Pearl Slide - Nickel Silver Inlay - Sterling Silver Winding Nickel Silver Fittings - Moroccan Leather Grip - Simulated Ivory Tip Plate - Silver Medal Horsehair - Traditional Hand-Cut Wood Wedges and Plugs Individually Numbered - Limited 10-year Guarantee to Registered Owner CodaBow Quality! . The "CodaBow Diamond NX Carbon Fiber 4/4 Cello Bow" is best product for you. We recommended CodaBow Diamond NX Carbon Fiber 4/4 Cello Bow