The Kupo 2-1/2 In. Grip Head With Big Handle (Black Powder-Coated Finish) has four different "V" shaped jaws, an ergonomic oversized "T" handle with dedicated roller bearings for maximum torque, and a non-slip aluminum friction disc. Aluminum and steel construction. The "V" shaped jaws have "teeth" that grab whatever is mounted between the plates securely. The Grip head 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 with a fixed solid pin to secure it to the aluminum casting for increased strength and durability. The 2 1/2 inch Head is most often used in conjunction with a grip arm, giving you complete flexibility to position gobos "go betweens" such as flags, scrims and silks as well as other accessories virtually anywhere. This grip head is clad in a stealthy black powder coated finish.