Pivoting clamp for 19, 20, 25 and 28mm diameter boom shafts. 

Fits on light stands of the same diameter. Use to accurately position flags and lights on your film or photography studio set.

Manufactured from hard wearing resin plastic, unlike the original this item will not rust. Use outside its totally Weatherproof! 

Fully compatible with the Manfrotto MN124 Boom Clamp and C-Stands.