The 2-1/2″ grip head (also known as a gobo head), consists of a pair of rotating aluminum discs attached to a 5/8″ (16mm) receiver . The discs have four different sized v shaped jaws to accept any accessory witha 5/8″ 1/2″, 3/8″, or 1/4″ mounting stud or tubing. The v shaped jaws have teeth that grab whatever is mounted between the plates securely. The 2-1/2″ grip head features an oversized ergonomic t handle and dedicated roller bearings designed for maximum torque. It uses a non-slip aluminum friction disc that will maintain its durability over time that offers the user positive locking strength and precise control. It is constructed around a solid steel central bolt witha fixed solid pin to secure it to the aluminum casting for increased strength and durability. The 2-1/2″ head is most often used in conjunction witha grip arm giving you complete flexibility to position gobos such as flags scrims and silks as well as other accessories virtually anywhere. This grip head is clad in a black powder coated finish.