Brought to the Tree industry from the Marine industry by J. David Driver, the X MAN, the X-Rigging Rings are made of hard-coat anodized aluminum. Which makes them strong as an OX! Spliced in house by SherrillTree with 1/2″ Tenex by Samson. Adjustable from 3 – 5 ft. Working Load limit 1750 lb (10:1). Made in the U.S.A.