These double rings are forged from aircraft-quality anodized aluminum and are ideal for turning your Didymos woven wrap into a swing or hammock. Simply pass the wrap tail through the large opening of the ring and tie with a double knot. The hammock is then hung by attaching the small opening of the ring to a suitable place or spot using rope or chain. Sold individually. Made in USA. Have fun! By the way, grown-ups will enjoy the relaxing effects of a swing, as well!