2R2L Guitar string button tuning pegs tuners machine heads. Transparent gear cover, you can see the state of the gears, easy to use. for ukulele guitar. Suit for 4 string mini guitar ukulele. Material:Metal + Acrylic colour:Red + silver Package Contents: 4 * Guitar knob (2L & 2R) 4 * Ferrule 4 * Threaded 4 * Screw Only 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 . The measurement allowed error is +/- 1-3cm.