Fast and accurate tuning-With these guitar tuning stops, you can tune guitar strings quickly and accurately, which is very convenient to use.Detailed Description:Pitch: 36mm, 36mm, 25mmColour: bronzeMaterial: aluminum alloys + Acacia woodSize: 110x45x31mmPackage Contents:2 x string buttons9 x screwsOnly the above package content, other products are not included.Note: Light shooting 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.Easy to install: With this guitar tuning button, you can easily install the guitar tuning keys on a new guitar or replace the damaged guitar with an old guitar tuning, which is easy to install.Dear friends, if you encounter any problems, please contact us directly, even though we may not be able to reply you immediately due to the time difference. All questions will be answered within 12 hours on working days, and we will try our best to answer within 24 hours during holidays.