The Manfrotto 3/8 Inch Arri Style Anti-rotation Adapter is compatible with the Arri style attachment that is commonly used in the film industry for camera housing rigs, monitors, LEDS and tripods.
The 3/8'' thread has a tightening knob and two anti-rotation pins that ensure a secure and stable fit.
The reversible steel plate featuring the anti-rotation pins also allows use of the 3/8'' thread without the pins for added versatility.