double 1 / 4 " Mounting Holes: Equipped with two standard 1 / 4 " 20UNC threaded holes, this clamp supports accessories like phone holders, microphones, flashes units, and action cameras for flexible studio setups Broad Compatibility: Perfect for attaching monitor arms, gooseneck lights, tablet stands, or camera rigs, this clamp works seamlessly with most photography and videography accessories needing 1 / 4 " screw mount Adjustable & Protective Design: With an expandable jaw width up to 6cm, this clamp accommodates tubes or surfaces from 1mm to 60mm thick The rubber padded base prevents scratches on delicate equipment and surfaces Heavy Duty Stability: The reinforced iron base provides sturdy grip on desks, shelves, or lighting stands, making it ideal for photography, videography, and projects requiring secure mounting Universals C Clamp: This versatile metal C clamp features double 1 / 4 " screw holes for securely mounting photography equipment like monitors, lights, and cameras on desks, tripods, or workbenches Its heavy duty iron construction ensures stability during use, Manufacturer: ZBIianxer