Hammerhead Industries Gear Keeper RT3-5912 Deluxe Locking Large Flashlight, Camera Retractor Snap Clip and Bracket Mount with Q/C-II Split Ring and Lanyard Accessory Retractable Tether for Large SCUBA Flashlights (4-C to 8-D)and Cameras 12-oz Retraction Force 42" Extension 80-lb break/release Snap Clip Mount for attachment to D-rings and Bracket Mount for attachment to Webbing Straps or Weight Belts Quick Connect Gear Attachment System with Q/C-II Male Stainless Steel Split Ring and Q/C-II Male Lanyard w/ Barrel Lock LOCK the retractor on land to secure heavy lights/cameras and UNLOCK underwater for low resistance extension while still retracting when not in use