Features:Locking tuners prevent the gear from being exposed to air and reduce the rust, which is more durable. Comes with screws, bushings and ferrules for easy mounting. The tuned guitar string does not loosen easily. With these tuning pegs, you can tune guitar strings fast and accurately. High quality internal gear, it is effective to prevent screw slippage. Suitable for acoustic and electric guitars of normal size. Specifications:Condition: 100% Brand NewMaterial: Copper AlloyColor: BrassWeight: Approx. 209g / 7.4ozSize: Approx.4.5 * 3.8cm / 1.8 * 1.5inFerrule Outer Diameter: Approx.1.4cm / 0.6inSuitable for 1cm / 0.4in diameter holePackage list:6 * Guitar Tuning Peg6 * Ferrule6 * Bushing6 * Screw