Sin City Skydiving - The three-ring release system was invented by Bill Booth and patented in 1978 as a means of attaching and detaching a canopy from its harness. | Facebook
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Palmer Safety Fall Protection Safety 4' Cross Arm Strap I 3” Wide Pass-through with Large D-Ring and Small D-Ring I ANSI OSHA Anchorage Sling Compliant Fall Arrest System - - Amazon.com
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