This is an off-camera i-TTL extension cord designed for Nikon cameras and speedlight flashes.
Maintains full i-TTL exposure data, autofocus assist, and high-speed sync capabilities while moving the flash unit off the camera body. Includes a 3-foot coiled cord, a camera hot-shoe connector, and a remote flash shoe mount with a metal foot, locking wheel, and a built-in 1/4"-20 threaded socket for mounting to flash brackets, tripods, or light stands.