Series 3. six-section carbon fibre boom. Gitzo's carbon fibre microphone booms continue to set the standard in terms of lightweight rigidity, and fast operation thanks to the 6X tubing and the G-Lock system. G-Lock allows for even faster and stronger locking and increases rigidity by 20%. The improvement is very important as rigidity is a key performance for microphone booms. All 6X carbon fibre and aluminium booms come with a smart Gitzo cleaner and a convenient anti-dust bag for storage and packing.