Features: 1. Guitar winder, serial milling cutter, simple and convenient. 2. Replace your string in a few seconds. 3. The notch head removes the bridge foot quickly and safely. 4. Comfortable handle The high-lever handle design makes it easy to cut thick strings. 5. Suitable for almost all guitars, banjo and mandolin. Specifications: Material: plastic + metal Color: Black Size: 90mm*35mm*5mm/3.54*1.37*0.19'' Net weight: 26g Gross weight: 26g Notes: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.