Sprenger Dynamic RS Double Jointed D-Ring - 14mmErgonomic shape enables a soft and even pressure distribution Middle link angled forward by 45 Fits exactly between tongue and palate Enables soft but effective rein aids Ideal for sensitive horses or horses with a fleshy tongue Direct pressure transmission on the tongue and lower jaw due to fixed mouthpiece Lies steady in the horses mouth, gentle on the corners of the mouth, supports sideways acting rein aids Thickness: 14 mm Ring : 65 mm Sizing is