Product name: Classic large square head semi closed string buttonUniversal size guitar string tuner, suitable compatible all acoustic guitars made of high-quality zinc alloy metal, with 12 heavy-duty internal gears (6 left+6 right).Features: suitable compatible folk acoustic guitarSpecifications:Material: Zinc alloyColor: SilverPackage includes: 12 * tuning heads (6 left+6 right), 12 * ferrules, 12 * threaded bushes, 12 * screwsNote:1. Due to manual measurement, please allow a small error. Please make sure you don't mind becompatiblee bidding2. Colors may vary depending on the display. Please understandNote:Hello, please pay attention to your shipping address when purchasing products. If your receipt incompatiblemation (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly.