The Promaster comb starts life as a solid billet of aluminum alloy. The laser cut brass reeds provide superior sound projection. The precision ergonomic covers are so easy to hold you’ll never put them down. Packed in a beautiful, soft lined, hard shell carrying case. Available in 14 keys: C, G, A, D, E, F, Bb, B, F#, Eb, Ab, Db, Hi G and Low F.