Feeling Kimblewick Single Jointed Rubber

Kimblewick - Kimberwick.

A kimblewick is a hanging D with a curb chain that acts like a pelham with a milder effect and is used with one rein.
This side piece has 2 slots for attaching a rein. The lower the rein, the greater the leverage and the sharper the bit.
The kimblewick is used in combination with a curb strap or curb chain.
The kimblewick gives the rider more control over the horse than a standard sidepiece.

Single Jointed

A single jointed bit has a hinge point in the middle that puts pressure on the lips, layers and sides of the tongue. A single jointed bit squeezes the tongue slightly under pressure and puts less pressure on the tongue.
A single jointed bit rises slightly in the middle and can sting the palate. In this case is it better to choose a double-jointed or straight mouthpiece.
A single jointed bit is a good basic bit, suitable for many horses and riders.

Rubber - plastic mouthpiece

A rubber bit can be flexible, but also can contain a hard core. The flexible rubber bit has a steel wire running through is, so the bit can not break. The flexible bit is softer.
Black rubber has the disadvantage that if a horse has a drier mouth, the bit gets hot by friction and then can burn on the tongue. When a horse produces enough saliva, a rubber bit is the softer variant of a metal bit.
The plastic variant is smoother and doesn’t have this problem.