Sprenger 16mm Hard Carbon Mullen Mouth Snaffle With Stainless Steel Eggbutt Horse Bit Clothing Accessories impact proof hard shell that is BAT 53945 impact proof hard shell that is paired with shock absorbing padding and soft zones The NS D ring is excellent for directional control and exceptionally good for tight turns during faster work as the mouthpiece will not slide across the mouth Eggbutt Mullen Mouth 16 mm thickness with oval stainless steel rings in a hard carbon mouth piecerigid mouthpiece with smooth surfaceexerts steady and even pressure onto the whole tongue widthallows direct pressure transmission on the tongue and lower jaw due to the fixed mouthpiecelies steady in the horse's mouth gentle on the corners of the mouth