The Manfrotto 244 Variable Friction Magic Arm is a fully articulated arm with 90 pivotable & 360 rotatable ends & an elbow that rotates 360. The knob allows partial loosening for safe & precise positioning of a light head or camera. It has 58 studs on ball joints at both ends with 38 & 14 female threads. Although it is supplied with a camera platform it requires a Super Clamp or Base available separately for use.