Designed to support the latest professional digital video cameras. Particular care has been taken to achieve the best combination between fluid and friction to allow the smoothest possible pans and tilts. The head is also equipped with a built in balance spring to help to support the camera Designed to support the latest professional digital video cameras. Particular care has been taken to achieve the best combination between fluid and friction to allow the smoothest possible pans and tilts. The head is also equipped with a built in balance spring to help to support the camera Designed to support the latest professional digital video cameras. Particular care has been taken to achieve the best combination between fluid and friction to allow the smoothest possible pans and tilts. The head is also equipped with a built in balance spring to help to support the camera weight. The 503 head has the best Price/Performance ratio of any fluid head on the market today. Designed for payloads up to an ample 13 lbs. The light but positive fluid movement provides exceptionally smooth control. The new drag adjustment device is continuous, from 0 to maximum level, allowing very fine control of the movements. The 503 Pro Video Head also features a quick-release sliding plate with VHS pin, a single pan handle and a flat base with 3/8" tripod mount.