VINGOBOW 4/4 Size Natural Black Mongolia Horse Hair Carbon Fiber Violin Bow BLACK HORSEHAIR - We use natural black Mongolian horsehair with great resilience, easier to rosin. Black horsehair is thicker than white hair, you will get louder and wild tone surprisingly. ADVANCED PERFORMANCE - The bow was made by old experienced bow-maker. It will provide you loud and wild tone and is recommended for advanced players. QUALITY CARBON FIBER - The stick is stronger and more durable than Pernambuco, with well bounce and great flexibility. It is a lightweight bow also, close to 60 grams. Approx. 74.5cm including the screw. Easy to play. PERFECT BALANCE POINT - Balance point is very important for a bow. Our maker always adjust it several times to ensure it is in the right range. Great balance point makes the bow easier to control. There are two winding patterns for this bow. Random shipment in winding patterns