BAZHOU Multi-Function Tools: This versatile guitar and bass maintenance tool integrates the winder, cutter and bridge pin puller for ease of use. Suitable For: Suitable for almost all guitars, basses, and some banjos and mandolins. Comfortable To Use: The guitar string winder is ergonomically designed for efficient and comfortable use. Alloy Steel Material: Made of high quality Alloy Steel for long life and comfortable grip. Delivery Quantity: 4pcs Package Contents: Only the above package contents, excluding other products. Size: 12*5*5cm (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.)