The quick struts not only keep your camera from falling if the Vacuum Cups were to come loose, they are also used to triangulate and keep the mount in stress with itself, making for a rock solid mount. With the quick struts, you simply attach the two hooks and pull the loose end of the rope for a secure, tight hold. The quick struts always stay tight, providing you with the confidence you need knowing your camera is hanging off a moving vehicle. To loosen them, just pull the rope to reduce tension and push the release button.