Profoto ProTwin Flash Head with 500W Halogen Modelling Lamp with Magnum Reflector (p/n 900719). A single head that provides twice the power and speed.
The ProTwin is a single head with two plugs and two flash tubes. Connect both plugs to one generator and halve the flash duration. Connect each plug to separate generators and get twice as much power or twice as fast recycling time. Apart from these obvious differences, the ProTwin shares its compact size and durable build with the ProHead Plus.