Sling Rings are made from aluminum 6061 and are lead free. Each and every ring that leaves our facility is strength tested on specially designed equipment.
Inner diameter: 3 inches
Outer diameter: 3.5 inches
If you are using a heavy weight (winter weight) or heavy nap fabric, a very wide fabric (34″ to 45″), or have just had difficulty adjusting your sling in the past, you may want large size rings. The large rings have successfully been used with a gathered shoulder, and are preferred for double-layered slings of nearly any material, as well as thicker wraps that are turned into slings.