This is the original Cambo REDWING Standard Boom. It features precision brass bearings for ultra-smooth movements and precision positioning of the mounted light source. The counterweight bags can be slided individually over a rail with a length of 55 cm (21") for ideal balancing. It comes with the RD-1218 head extension. The Standard Boom is perfect for general studio photography, large sets, portrait studios and applications with extremely low angles that other booms can't handle. It features calibrated angle indicators on both the height adjustment and rotating head movements, making it easy to repeat setups. Specifications Standard Boom • overall size assembled: 2.9m (9.5') • standard reach: 1.8m (6') with default 46cm (18") extension (included) • weight: 7 Kg (16 lbs) + Lead shot includes: 2 counterweight bags with in total 11.2 Kg (25 Lbs) of lead shot Breaks down in three segments for ease of transportation. Longest segment 142cm (56")