Manfrotto 208HEX Camera Mounting Adapter Hexagonal Pin

A special long 1/4′ camera screw used in conjunction with the hexagonal 030 camera plate which allows you to fit the Metz flash bracket.

The Avenger F831TH Baby Female Swivel with Ball can convert an arm or dowel up to 16mm (5/8″) in diameter into a boom arm. It can add versatility to your non-swivelling light fixture (with optional #013) to make it more versatile. Each end has a locking Baby 16mm (5/8″) receiver. The ball joint has a pull-and-lock aluminium alloy handle with anti-rotation springs. It weighs 0.8 kg (1.76 lb).

28mm male adapter.