Neewer 6 Pieces Sliver Acoustic Guitar Machine Heads Knobs Guitar String Tuning Peg Tuner(3 for Left + 3 for Right) Neewer universal size guitar string tuner, fits for all balladry guitars Made with high quality zinc alloy metal With heavy duty internal gear 6 Pieces (3 for Left + 3 for Right) Set Includes 6 Ferrules and 12 Screws