Shires Brass Alloy Flat Ring Eggbutt with Lozenge

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.