This 50 mm Gitzo foot is designed for Gitzo tripods or monopods that connect to an existing foot with a 3/8 "-16 accessory thread. It features a 50 mm wide rubber pad that forms a steel 3/8 "-16 mount for screwing into the bottom of a compatible tripod or monopod. When using the Gitzo 50 mm Big Foot, the ball joint allows the rubber pad to tilt, ensuring full contact with a flat surface regardless of the angle position of an attached tripod or monopod leg. By maximizing contact with the surface it rests on, it enhances the ability of a tripod or monopod to provide a stable platform for a camera, sports optics, or accessories.