Gitzo GH2750QR Series 2 Magnesium Quick Release Off Center Ball Head - Replaces G1276M (Grey) 20% lighter than the aluminum version The graduated base allows perfect panoramic positioning PTFE-based anodizing process gives the ball a more refined, smoother movement than ever This model features a single I slot for the camera fixing screw to allow fine positioning of the camera on the head Quick release mount for ease of attaching and removing camera 20% lighter than the aluminum version The graduated base allows perfect panoramic positioning Anodizing process gives the ball a more refined, smoother movement than ever This model features a single I slot for the camera fixing screw to allow fine positioning of the camera on the head Quick release mount for ease of attaching and removing camera.