The Delta Rings are made from polyethylene , a durable plastic. The ring is 215mm top to bottom and 165mm wide at the widest point.
The Delta rings can be hung off an eye hook and a quick link or you can add in some chain. The rings will hold up to 100 kg if attached properly.
Hardware sold separately if required ( 8 mm eye screw plus Quick Link), for $10 per pair of Rings.