The MB 12 is a solid Level 3 ported mouthpiece. Because the port is a little wider than the 43LP, the tongue pressure that the horse feels on the outside edges of the tongue is even milder than the 43LP. The port on this mouthpiece is 1 ¼", so it will apply little to no palate pressure. Suitable for a very finished horse that requires the occasional very mild reminder. It lacks Independent Side Movement™ so has a more solid feel and shows less rein movement than the MB 43LP or MB 33. Sweet iron mouthpiece oxidizes and encourages salivation.
NO Independent Side Movement
Sweet Iron mouthpiece
Notes: For a wider port, see the MB 16. For similar tongue relief with Independent Side Movement, see the MB 43LP.
The 7" Flat Shank is stainless steel and curved slightly back towards the horse, with a flat-top purchase and a rein ring. The mouthpiece has a fixed attachment. The Flat Shank has the patented Independent Swivel Cheek, where the purchase, mouthpiece and shank all move independently of each other. The purchase is slightly angled away from the cheek to avoid rubbing. It has an indirect (curb) rein action designed to be used with a curb strap which attaches to the purchase. The flat shank uses the combination of the fixed cheek and fixed rein to apply pressure to the mouth, chin and poll.