Neewer 12 Pieces Guitar String Tuning Peg Tuner Machine Heads Knobs for Acoustic Guitar -Silver (6 for Left + 6 for Right) Neewer universal size guitar string tuner, fits for all acoustic guitars Made with high quality zinc alloy metal With heavy duty internal gear 12 Pieces (6 for Left + 6 for Right).Set Includes 12 Ferrules and 24 Screws Note:Accessories ONLY,Guitar is NOT included.