This cheek pricker is made of leather and has stiff nylon bristles. It is designed to be placed between the ring of the bit and the horses mouth. It is particularly effective for horses that always drift in the same direction usually when jumping or racing. For example, if the horse drifts to the left, put it on the left hand side of his bit – then when pressure is applied to the right rein, the pricker applies pressure to the left side of the horses mouth. Available individually, one size only.