Quantity: 13 pcs Color: Black Weight: 100 g Packing list: 1x flat surface base plate, 1x curved base plate,1x a thumb knob,1x stainless steel hardware, 1 quick release buckle, 1 pivot arm assembly, 1 quick-release vibration plug, 1x leash tether, 1x a vertical J mount Compatiable with: Gopro hero 3+ 3 2 1 Function:If you want to expand your mounting options for you Motorsports HERO Wide, Motorsports HERO, Helmet HERO WIDE, Surf HERO, or Wide HERO camera...this 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.