7 Steel strings:Made of Durable metal strings has long service life and resonance effect of comfortable.The volume is flexible and the tone is easy to adjust. The shorter is, the higher tone you .These strings can offer full tone and beautiful sound, they are the for music enthusiast, performers, musicians.Tuning Wrench: You can use the wrench to adjust the tension of string by using turning clockwise or counterclockwise.Colour:Silver+woodMaterial:Wood + metalPackage Contents:7 x Laya strings7 x studs1 x tuning wrenchOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.