The Eggbutt cheekpiece prevents pinching of the lips and give a slightly more solid feel against the side of the face. It also prevents the bit being pulled through the mouth. The release is slower and also introduces some poll pressure.
The Elliptical is a 45 mm lozenge, it is stronger than the Control Plate due to it having a smaller surface area. Consequently, a horse using his tongue as a means of pushing against the bit and therefore taking control, will draw back and tuck his chin in, coming back to a better point of control.
Bombers Loose Ring Elliptical Dressage Control Mouthpiece Thickness: 14mm Sweet Iron Mouthpiece Some sizes held...
Mouthpiece Thickness: 14mm (sizes 12.5cm and up) 12mm (sizes 11.5cm) Sweet Iron Mouthpiece The Eggbutt...
Ovation® Elite Stainless Steel Loose Ring with German Silver Mouth 70mm Stainless Steel Rings Mouthpiece...