Cinemagic Depot Super Clamp Cinemagic Depot Super Clamp has super durable structure that securely attaches to any surface, round or flat With both 3/8" & 1/4" thread on its back, you can simply execute any on-camera mounting with ease Works extremely well with our Cinemagic Depot Professional Magic Arm Combo that has hot shoe adapter kit for more position variation Rugged inner surface for enhanced friction that can be securely mounted on any tube from 0.5" to 2.1" 30 DAYS MONEY BACK SATISFACTION GUARANTEE