Patikil Guitar Tuners Machine Heads 3+3 Set Tuning Keys String Pegs For Classical Guitar Black Button

What Is This?Great To Replace Your Old And Dirty Tuning Pegs And Great For Guitar Tuning. Suitable For Classical Guitars.What Will I Get?Material: Metal &Amp; Plasticrate 1:15 Gearedin The Package Of:2 X Classical Guitar Tuning Keys6 X Washer8 X Screwstotal Size: 110Mm X 42Mm X 38Mm/4.33 Inch X 1.65Inch X 1.49 Inch(L*W*T)Are There Any Advantages Of The Product?Made Of Solid Metal, Durable, And Anti-Rust To Use.Classical Guitar Tuner Pegs With Internal Gear, Easy And Labor-Saving To Replace And Adjust String.How To Use It?3 Machine Heads In A Line, 2 Pieces Tuning Keys, One Is For Left, The Other One Is For Right.What Should I Notice?There May Be A Slight Color Difference Between The Real Object And The Picture.