Ercole M11-001 Spigot Steel 1/4″-20 & 3/8″-16 male threads

Avenger B142 Adaptor Bushing D.50 for Strato-Safe.

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.

Same as 036-38 with 1/4” male threads.