The Myler short shank combination with low port comfort snaffle mouthpiece is the most popular Myler combination bit. The 33 04 uses the comfort snaffle mouthpiece which acts on tongue and corners of the bars, gently wrapping lips, but the port gives more tongue relief when the bit is not engaged by the rider. Myler combination bits are often misunderstood and thought to be severe. The action of a Myler combination is to use up to 5 pressure points on the horses head as opposed to one or two that most conventional bits work on. This means the combination will give the rider superior control, without using excessive force in any one place which results in a much more relaxed and comfortable horse. Myler combinations can be useful to school horses in when they are normally ridden in a double bridle, as it encourages self carriage and natural lightness.