DURABLE - Locking tuners prevent the from being exposed to and reduce the rust, which is more durable.EASY MOUNTING - Guitar Tuners comes with screws, bushings and ferrules for easy mounting.NOT LOOSEN - The tuned does not loosen easily.TUNE GUITAR ACCURATELY - With these tuning pegs, you can tune fast and accurately.PREVENT SCREW SLIPPAGE - High quality internal , it's effective to prevent screw slippage.Locking tuners prevent the from being exposed to and reduce the rust, which is more durable. Comes with screws, bushings and ferrules for easy mounting. The tuned does not loosen easily. With these tuning pegs, you can tune fast and accurately. High quality internal , it is effective to prevent screw slippage. Suitable for conventional size acoustic guitar and electric guitar.Condition:Weight:Approx. 168g / 59ozTuning Peg Size:Approx. 43 * 38cm / 17 * 15inFerrule Outer Diameter:14cm / 06inSuitable for 1cm / 04in diameter holecolour:goldMaterial:Metal + synthetic plasticPackage Contents:6 * Guitar Tuning PegOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.