The Grab Bag is bag of add-on parts is for GoPro quick-release camera owners wanting more mounts. If you want to expand your mounting options for you Motorsports HERO Wide Motorsports HERO Helmet HERO WIDE Surf HERO or Wide HERO camerathis bag will set you up. It includes 1 flat surface base plate 1 curved base plate a thumb knob and stainless steel hardware 1 quick release buckle 1 pivot arm assembly 1 quick-release vibration plug 1 leash tether and a vertical J mount for mounting your camera on a vertical wall surface like a car bumper wall back of helmet or similar.