This is a professional Hand Grip Strap accessories for most cameras with 1/4-20 tripod socket. The metal base plate is Arca Swiss Type quick release plate with a standard 1/4-20 socket underneath, which bring the convenience of putting your camera to a tripod any time with the strap on, besides that, the metal base plate also has a 90 degree adjustable eyelet which allow your camera to be connected by any quick release shoulder strap or neck strap with a carabiner. Package include: Metal Base Plate X 1