Guitar Locked String Tuner Reed Key Machine Heads Semicircle Button for Acoustic Electric Guitar Acoustic Guitar Tuning PTtorn locking tuners prevent the gears from being exposed to air and reduce rust, which is more durable. Easy Installation - Guitar tuners are equipped with screws, sleeves and sleeves for easy installation. Do not loosen - a tuned guitar string does not loosen easily. Fine-tune your guitar - With these tuning pegs you can tune your guitar strings quickly and accurately. Prevent screw slippage--High quality internal gear, effectively prevent screw slippage. Locking tuners prevents the gears from being exposed to air and reduces rust, which is more durable. Screws, sleeves and sleeves are included for easy installation. A tuned guitar string does not relax easily. With these tuning pegs, you can tune your guitar strings quickly and accurately. High quality internal gear, effectively prevent the screw from slipping. Suitable for conventional acoustic guitar and electric guitar sizes. Condition: 100% Brand NewWeight: Approx. 168g / 5.9oz Reed Size: Approx. 4.3 * 3.8cm / 1.7 * 1.5in Ferrule Outer Diameter: 1.4cm / 0.6in Suitable for 1cm / 0.4in Diameter Hole Color: Gold Material: Metal + Plastic Package Content: 6 * Guitar ReedOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color p