Manfrotto 085 BSL Light Boom, 085 BSL, LIGHT BOOM 35 BLACK A25 W/O ST. Diameter35mm. 3 section boom arm complete with Pivoting Clamp 123, Counter Weight 022, cable clips and locking key. Load: 6kg at 230cm with 20kg of counter weight. Weight: 2.2kg, boom only. Dismantled length: 100cm. Assembled: 280cm. 6kg at maximum extension.