Helaas is er een fout opgetreden, probeert u het a.u.b. later nogmaals.
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Great Practice Apaptor
This practice adaptor enables you to be aware of the pressure you are putting on your mouthpiece. It is adjustable so you decide how much pressure you want to be able to use before the device diverts your air from the Instrument to the side of the adaptor therefore ceasing any sound.
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