The Bits and their actions: cheeks, mouths, double
cheek
The action of the loose ring
The most popular - loose loops have more movement and play than fixed hips or cheeks. It discourages fixing, blocking and tilting, and encourages the mouth. It allows more movement in the mouthpiece so that it can follow the Angle of the tongue, as the Angle of the horn wheel and the overall profile of the horse change through different work, etc. Properly installed high quality loose rings should not cause any bite or friction.
Egg egg action
It's fixed on the cheek. Everything stays still in the mouth, which can be very beneficial if the horse lacks the confidence to stretch contact.
Bauche's operation
When wearing a contactor, the upper arm is tilted forward so that the braces are raised, thereby suspending them in the mouth and reducing the pressure between the tongue and the rod, which is often beneficial in cases of hypersensitivity. Any extension beyond the larynx creates public opinion pressure - which itself has the effect of lowering the head. However, if the horse is forward into contact and positive behind, this will encourage a round action and greatly help the contour. This cheek is legal in dressage, used as a Snaffle(alone) or a Bradoon with a Weymouth. The legal length limit for a wrap cut or hanging blush is 12cm - this is from top to bottom, not just the upper arm.
Boucher at rest - the cheek is always connected to the small loop and the bridle is one of the main loops.
When the ring is worn, the upper arm is tilted forward, causing cone pressure and suspending the cone in the mouth, which not only helps to shape the contour, but is also very beneficial for the sensitive mouth because the pressure inside the mouth is reduced.