Feature: 1. This guitar tuning key is made of zinc alloy, sturdy and durable, ensuring long‑term use. 2. The tuned guitar strings of this 12-string acoustic guitar are not easy to loosen. 3. With these tuning keys, you can tune the guitar strings quickly and accurately. 4. The internal gears of these tuning pegs effectively prevent the screws from slipping. 5. These zinc alloy tuning keys are compatible with 12‑string guitars and are easy to operate. Specification: Item Type: Guitar Tuning Key Material: Zinc Alloy+ Metal Color: Silver Package List: 2 x 6 String Tuning Key Head 12 x Screw 12 x Socket Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.