Gitzo Series 1 4-Section Aluminum Microphone Boom Pole.

With the new tubes and G-Lock, this generation of Gitzo Aluminum booms is surprisingly light and extremely rigid even when fully extended. Boom length can be quickly and precisely adjusted thanks to Anti Leg Rotation system.

What is the Gitzo G-Lock?
G-lock is the innovative evolution of the original twist-lock system: completely redesigned to be faster, stronger and more rigid than its predecessor. Unwanted gaps in between lock parts have been removed to give a rock solid structure to the leg sections, resulting in more clarity and sharpness to your pictures. An added Gravity Lock effect makes the whole system unique: the cone shaped ramp and locking ring work together so that the heavier the load applied vertically to the system is, the stronger the locking effect is going to be.