ERGONOMIC DESIGN:Ergonomic designed tool, easy to use with little efforts. A practical and necessary guitar maintenance tool for guitar player.Not only help to quickly change the strings, but also has a bridge pin remover. CONVENIENT TO USE:With detachable drill bit, can make work faster.You can add strings to the guitar quickly and easily. FUNCTION:String winder is a repair tool, you can loosen and adjust the strings by loosening and winding the tuning screws, so that you can make the instrument pitch more accurate. GOOD ACCESSORY:String winder has quality assurance and high safety factor, and you can be used with confidence.String winder is a good accessory for stringed instrument lovers. Delivery Quantity: 1set, Package Contents: Only the above package contents, excluding other products. Size: 2.4 x 6.6cm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Colour: Black (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)