With payload capacity of 13.2 lb (6 kg, the 503 fluid head is designed to support the latest range of professional digital cameras. By activating the best combination between fluid and friction, it provides exceptionally smooth control through 360° pan and +90 to -60° tilt. Offers a built-in balance spring to help support the camera weight and a continuous drag adjustment device from 0 to maximum level, allowing very fine control of the movements. For added convenience a built-in spirit level and a quick-release sliding plate is included, to allow easier balancing of the camera.