221103Web draw rein (19 mm), with plain leather reins parts (16 mm). The draw rein has two small round eye swivel snap hooks and a detachable leather girth loop with D ring. The draw rein is fitted with stainless steel fittings. The draw rein serves to ensure your horse has optimal head posture. If your horse overextends its head, the draw rein will put pressure on the bit, which will subside when your horse gives way.