Or The 'Bobin' as it was engineered by Graham Bobin of Speedsail UK. A powerful (x 8) smooth action system cleated off on a mast base mounted (thus very strong) platform - on recent models the platform end and captive cleat are angled more up towards the pilot to give a better angle of pull.

This downhaul will put a considerable bend in your mast when using just your little finger !