This little rosin can increase friction of bow hair and make them speak so that it is a good helper to better your performance. As a saying goes, a handy tool makes a handy man. This gadget will deserve your try! Features: Small in size, stored in a mini box for ease of use and transport. Applied to bow hair to increase friction. Grip the hair and make them speak, or vibrate clearly, better performance. Specifications: Material: Resin Size:48.7x31.6mm/1.92x1.24''(approx) Color:as picture shown Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Rosin(other accessories demo in the picture is not included.)