Beneath-the-Surface For GoPro/Intova Flex Arm Tray Model #3 with and without Quick Disconnect Usable on Land or Ocean Ends - All of our flex arm ends and light mounts are machined out of solid Delrin bar stock to maintain our high quality standards. Safety Cable - A built - in 1/16" vinyl coated stainless steel safety cable runs through the entire arm ensuring that you will never lose your valuable lighting equipment Models #3 have adjustable handle positions, no set up required This item is available in two versions - with or without QD feature (Quick Disconnect)