The manfrotto msq6 quick release adapter with plate allows you to fit the manfrotto q6 top lock qr system to an existing photo head the top lock system has been developed to offer photographers a fast easy to use and very secure camera quick release mechanism suitable for heavy pro equipment the camera plate clicks into the clamp from above and as soon as it engages it triggers a safety pin that stops the plate and camera from sliding out accidentally even before the clamp is locked the c