76"/1.9m Aluminum Camera Tripod Portable Detachable Monopod Transverse Center Column 22lbs/10kg Load with for DSLR Cameras, T254A6+BH-28L (SA254T3)

SKU: KF09.096

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For how to install the center column, please refer to this video https://youtu.be/3BvJKWNElRg. 
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For how to install the foot locking system, please refer to this video https://youtu.be/jZb6Fn6T_u0. 
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To hold telephoto lens, it is recommended to use a tripod mount ring additionally for better balance. Meanwhile, it is better to hang some heavy thing to the hook to lower the center of gravity on this tripod to make it more sturdy and less prone to vibrations.