Description curb gag:
This is a gag snaffle bit, but with a very different effect. A normal gag the gag ropes are attached to the cheek pieces. The curb gag has an extra ring that is attached on top of the bit ring and to the cheek pieces. The gag ropes go through the eyes of the bit, but then they join underneath the chin instead of being attached to the bridle. By pressure on the reins, it will give extra pressure on the lower jaw/chin.
This bit is sharp and give a lot of pressure with a unsteady hand and is therefore not suitable for the inexperienced riders or horses.
Features straight / unjointed mouthpiece:
A unjointed bit/straight bit often works sharper than a single or double jointed mouthpiece. The shape of the mouthpiece determines the pressure in the mouth. A straight mouth piece with tongue port gives more pressure on the layers and keeps the tongue free. The straighter and thicker the mouthpiece, the more pressure on the tongue.
Features single leather mouthpiece:
For horses that are sensitive to the layers or have an injury in the mouth leather bits are frequently used. This bit is soft. Leather has the characteristic that it is softer when wet by saliva in the mouth.
There is a leather cloth stitched around an existing bit. The Trust bits have a nylon core and are flexible so they form to the horse's mouth.