Brought to the tree industry by J. David Driver, the X-Man, the X-Rigging rings are simple in concept, brilliant in function. The rings are made with milled aluminum, then hard-coat anodized, and then polished–making them strong, durable and low friction. Available in 3 sizes and tensile strengths: Medium (20mm x 14mm), Large (28mm x 20mm) and XL (38mm x 28mm). Made in the USA!