PEN SAFE, 4'' x 1/2" Steel O-Ring
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Widely used in stretcher spiders. We also use them as a multi-directional connection point in high lines or as a movable control point in water rescue. Reduces twisting in complicated rigging. Hot drop forged steel for the highest strength. Inside diameter is 3" (76 cm). Strength 25,000 lbf. (111.2 kN). Weight 9 oz. (255 g). Made in Canada.