The Manfrotto 244 Variable Friction Magic Arm is 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. It has 5/8" studs on ball
joints at both ends with 3/8 and 1/4" female threads. Although it is
supplied with a camera platform, it requires a Super Clamp or Base
(available separately) for use.