The Gitzo G1177M Series 1 Magnesium Ball Head is lightweight yet robust, weighing only .68 pounds with an 8.82 pound capacity. The G1177M features a precision machined aluminum ball for ultra-smooth operation, along with a single lock for rapid and reliable locking in any position. The disc now features Safe Lock, a special techno polymer that maximizes locking torque, eliminates micro movements and cuts vibration.