All Purpose Hot Shoe Professional.
It has two PC male outlets, one PC female outlet, a check fire button, hot shoe on the top and also at the bottom.Permits the use of four flashguns of the same type,one on the top linked directly with camera's hot shoe and three more linked with 2 male and one female outlet of the adapter with respective synch cords. The PC female outlet can also be used for plugging the slave unit.

Manufactured by Active Industries.