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The stainless steel link joins the sweet iron mouth pieces. The link applies sharp tongue pressure and there will be some bar pressure and pinch.
Bomber recommends this for a horse that bears down or has a low head carriage, this will lift the head and lighten the contact.
The Sara Grills creates a pressure point on the tongue due to the center component concentrating pressure on a small surface area. Pressure descends onto the bars and due to the mouthpiece being a double break, it will create a squeeze on the bars – however this squeeze on the bars is less than the squeeze created by a single jointed mouthpiece. The Sara Grills is available in Sweet Iron. The Sweet Iron material was chosen as a metal option as it oxidizes. Oxidization encourages salivation and acceptance of the mouthpiece. The double break, Sara Grills, is a broken mouthpiece and will take the shape of the horses mouth.