The fixed rings prevent pinching, whilst the brass alloy double joint distributes pressure over both the tongue and bars of the mouth to encourage mouthing and contact. Mouthpiece thickness: 13mm. Cheek height: 55mm (4.5″, 5″), 75mm (5.5″, 6″). Brass alloy mouth: Copper is alloyed with a harder metal to produce warm, durable mouthpieces which aid salivation. Stainless steel is used for the cheeks due to it being durable, easy to clean and resistance to rust.
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