A fully articulated arm with 90° pivotable and 360° rotatable ends, and an elbow that rotates 360:. The knob allows partial loosening for safe and precise positioning of a light head or camera. 5/8 in studs on ball joint at both ends with 3/8 and 1/4 in female threads. Supplied with a camera platform that has a quick-release mechanism and plate. Maximum load: 8 lbs (3.6 kg) Requires Super Clamp or Base.