Myler Stainless Steel 3" loose ring with 14mm Comfort Snaffle Wide Barrel (MB 02-14mm) copper inlay mouth. Level 1. 5" The Myler System is a whole new way of understanding how the bit works in your horse's mouth. Ron, Dale and Bob Myler are third generation horsemen who developed a theory of tongue relief and tongue pressure through training their own horses. Their unique mouthpiece designs and innovative cheekpieces give the rider excellent communication with the horse and allow the horse to relax into the bridle.