Features 1.The gear can be stuck steadily and will not slip, preventing the loosening of the strings from causing the timbre to change. 2.Made of excellent metal materials, has high hardness and corrosion resistance, can be used for a long time. 3.Has a precise 1:18 gear ratio, which ensures accurate intonation and tuning stability. 4.Ideal to replace your old and damaged tuning keys and suitable for electric or acoustic guitar tuning. 5.Equipped with screws tools, easy to install and remove, and can be replaced. Specification Item Type: Guitar Tuning Key Material: Alloy handle + A3 steel plate + free-cutting iron chord + copper gear Color: Silver Gear Ratio: 1: 18 Feature: Distinguish between left and right Package List 6 x Guitar Tuning Key 12 x Screws