Haoge 7" Inch Adjustable Friction Articulating Magic Arm for DSLR Rig Camera LCD Monitor LED Light Flash Lights Microphone TPCAST HTC Vive Vive Pro Base Station lightinghouse This 7" magic arm is with precise design, allows universal mounting options. Supplies 1/4" screw adapters to fit camera, lamp holder and other accessories. Articulating design, with one knob locks all position. Compatible with: Camera, Flash, LCD monitor, LED light and other accessories with 1/4" screw. Easy to install, each joint is adjustable, and all of them is locked with one knob. the whole arm can be adjusted at all angles.