Myler Dee without Hooks Mullen Triple Barrel MB 32-3_ 89-21315. The MB 32-3 is an innovative Myler alternative to the traditional mullen. It has three barrels which turn the mouthpiece from the typical solid bar of a mullen into a flexible bar which allows the horse to elevate his tongue and makes swallowing more easy. When the reins are engaged_ the mouthpiece becomes a solid bar like a traditional mullen_ but with an exaggerated curve. This curved bar rotates across the bars and lips down on to the tongue. It also applies pressure across the entire surface... - Myler Dee without Hooks Mullen Triple Barrel MB 32-3_ 89-21315. | 
