Description:Easy to Use: The guitar locking tuner is easy to install, which can be tuned smoothly and precisely. Durable Material: The guitar tuner is made of iron, which is durable and highly reliable and can be used for a long time. Professional Design: 3R 3L tuning key peg kit with 1:21 gear ratio, which is suitable for electric guitar or acoustic guitar, Replacement accessories: The interlocking tuner makes it easy to replace old or dirty guitar tuners. Specification: Material: Iron. Location: 3R 3L. Color: gold. Gear ratio: 1:21.Note:There may be a bit of color distortion due to different computer resolutions. There may be slight errors due to other manual measurement. Package Included: 6pcs Guitar Keys (3L 3R).