Manfrotto Super Boom Pivot Clamp

The 123 is the pivoting clamp that carries a boom shaft on a stand and lets the arm swing through its full arc without the stand having to move. It grips 35 mm boom shafts and is specified for all Manfrotto Super Booms and Heavy Duty Booms.

A 28 mm (1/8 in) male stud and a 5/8 in (16 mm) female socket are both built in, so it drops onto a stand top and takes a spigot without an adapter either way. It weighs 0.8 kg (1.76 lb).