For heavier camera rigs for drama production we have a fully-serviced Sachtler Video 30 II 150mm bowl head. Comes with quick release tripod plate using 1 or 2 large 3/8" screw threads.
This tripod head is compatible with our Sachlter DA150L and is used on our Losmandy Jib.
The head can balance light or heavy loads up to 60kg with 3 switched in/out variable stages of counter weight (and no counterweight setting too) and a long head plate movement for front-back camera balancing.
The head is supplied with dual pan-handles in a Sachtler flightcase.
An ideal tripod head for a fully rigged RED cinema camera with mattebox and quick release plate with Vlock mount and external recorder or a fully kitted out Canon C300 with heavy lenses and follow focus. Its also a very stable head for using long lenses for any situation - especially if its windy.