Manfrotto 036MR Stud Lighting Hexagon w hole for safty cable for lights also for joining 2 superclamps

Avenger AV-E390 Adaptor TVMP Yoke to Stand Female Socket.

• Zinc-plated Steel Construction
• 5/8″ Receiver

This double male adapter features 16mm (5/8”) pins on each side.

The Avenger E300 5/8″ Stud with 1/4-20″ Female Thread screws to the top of a light stand, stud or accessory that ends in a male 1/4-20″ thread. It lengthens and strengthens an existing fixture mount.