A Hackamore works by pressure on the nose through a leverage. The pressure on the nose depends on the length of the sides. A hackamore is basically a tool for riding bitless, but can also be used in combination with a snaffle. A hackamore can be quite sharp because of the leverage and the pressure on the nose and chin. If a curb chain is used, the Hackamore is even sharper.
It is very important that the noseband of the hackamore is placed correctly. The hackamore is not suitable for inexperienced riders or horses.
Features single jointed 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.
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.