Black Steel 7" Seven Shank with Sweet Iron Comfort Snaffle with Copper Roller (MB 03, Level 1) Copper Inlay Mouth. This mouthpiece is made of polished Sweet Iron which naturally oxidizes or rusts. Harmless to horses, it has a sweet taste and promotes salivation.
The bars of the bit are curved so the bit wraps the bars and lips of the mouth instead of pinching them when it rotates on to the tongue.
The curve makes more room for the tongue under the bit.
The barrel distributes the pressure kindly on the tongue.
The Copper Roller on the center barrel can comfort horses that are restless or nervous.
The seven shank cheek piece has a mild to moderate degree of leverage. The mouthpiece is fixed to the cheek with a "stack". The entire shank moves independently of the mouthpiece. The purchase is slightly angled away from the horse to avoid rubbing.
The Myler Level One horse would:
Be young and inexperienced
Be just beginning training
Be riding in a discipline that restricts bits to snaffle with jointed mouthpiece
The Copper Roller on the center barrel can comfort horses that are restless or nervous.