Myler 3 3/8" Medium Dee with Hooks with Low Port Comfort Snaffle MB 04We love the Myler 3 3 8" Medium Dee with Hooks Low Port Comfort Snaffle MB 04 for the quality in material and the durability of the Bit. The MB 04 is similar to the MB 02 in that it will rotate on the tongue and apply tongue pressure, however, it has a small (") port that introduces some tongue relief to the horse. The port allows the horse to swallow and move his tongue when he is moving forward and relaxed, which acts as a release or reward. The