The Gitzo Series 4 Centre Ball Head with Screw Knob is designed for professional use, supporting up to 30kg payload. It's ideal for long, heavy lenses with zero drift, thanks to its precision friction system and Arca-Type compatibility. This ball head offers impressively smooth and fluid motion, perfect for travel, outdoor, wildlife, sport, or travel photography. It features Gitzo's redesigned zero-drift locking system, a unique hollow-sphere ball, and a fluid drag system for improved panning. The head is also compatible with Series 3, 4 & 5 Systematic tripods.