Features: 1. Made of precise CNC aluminum alloy, solid and sturdy, also with a protective dense rubber pad on clamp area to prevent scratches With standard 1/4" and 3/8" female thread on the back-side of clamp help you to mount a small camera, monitor, LED video light, microphone, speedlite, and more 2. With an adjustable jaw opening, the super clamp fits around a rod, tube, pipe, and crossbar 25mm-60mm in diameter, it is ideal for photography, video recording, live streaming, and video conferencing .
eBay