||12 holes 48 tone harmonica interior design is the same as the previous 12 holes 48 tone harmonica, 12 holes can play 48 tones. Self - made covering film, with the world's advanced processing technology, so that in any season, it can play without mucous membrane. The stainless steel with high hardness changes the sound key, the thickness does not deform, and pushes flexibly. At the same time, precise turning of the round mouth makes the air flow smooth and full when playing. The reed is made of phosphorous bronze spring with sound and round and solid tone. It is especially suitable for playing classical style and melodious music, and can also play popular music. The difference is that the shell of the flute harmonica is designed with a cylinder, and the filter is used at both ends to release the sound of playing. At the same time, it increases the harmonica's loudness and echo effect. The shell has a copper or five-color shell, with both long and short versions, enriching the different needs of harmonica lovers.