Used only once.... Proaim Heavy-duty CST-150 Tripod supports a payload of up to 176lb, allowing you to mount full ENG/EFP Setups or other heavier camera setup. The CST-150 Tripod Stand also works efficiently with many other equipment types such as Sliders, Jibs and Geared Heads. High-Grade Aluminum Construction and the Cast Iron 150mm Bowl Base make the Proaim CST-150 extremely solid yet lightweight.