The fixed rings prevent pinching whilst the lozenge disperses the contact across the mouth.
This lightens the pressure applied to the tongue.
Mouthpiece thickness: 14mm.
Cheek height: 55mm (4.5″, 5.5″), 75mm (5.5″, 6″).
Stainless steel is the most common material for bits.
Durable, easy to clean, tasteless and does not rust.
