Myler Eggbutt with Hooks Low Port Comfort Snaffle MB 04*You are seeing a brand new design for this cheekpiece. Please be aware that some retailers may not have this style in stock yet so you may receive the original design. Size 6" only available in old design. Myler Stainless Steel Eggbutt with Hooks, MB 04 Low Port Comfort Snaffle, Level 2 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