Ercole M11-020 Spigot Steel 1-1/8″ 28mm male stud with plate

For more accurate light positioning: it helps keep the light in horizontal position independently on the angle of the boom. Specifically designed to be used on boom arm with light attachment with 16 mm pin.

Avenger B143 Adaptor Bushing D.60 for Strato-Safe.

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