koolehaoda Quick release plate for monitors and magic arm articulating arm with security locking system to quickly lock the quick release plate. Well built in aluminum stainless steel durable and sturdy.Precisely engineered, black anodized, sealing it against corrosion and abrasion. Features with 2 pieces of 1/4'-20 screw, allow you attach magic arm, HDMI splitter, LED light, flash, LCD monitor to your rig in a fast way. One plate mounted to the monitors, and the other one plate can be mounted to magic arm, tripod, camera lens that with 1/4 in screw socket With red locking knob, the mechanism will lock the both side very tightly.