Hohner 3P595BX Blue Midnight Harmonica Pro, 3 Pack - Keys of A, C and G 3 Diatonic Harmonicas: Keys of A, C, & G Custom "Chicago style" tuning from Hohner's vaults Trademark blue plastic comb offers a comfortable mouthpiece for ease of playing that will never swell Stainless steel cover plates with wide open back ends for maximum volume and tone Assembled with two single screws for easy customization of reed gapping and set up