The Impact Super Clamp with T-Handle is a staple on any set or shoot. Like gaffers tape, this is a piece of gear that youll always find a use for. Its strong rubber-padded jaws open up to 2.16", then lock securely with the short, ergonomic knob. For better grip on flat surfaces, a furniture wedge is included . The Super Clamp has 1/4"-20 female threads and a push-button, locking 5/8" hexagonal female receiver. A hex-base 5/8" Baby stud with a 1/4"-20 male threads on top is included for camera and light accessories.