The Custom Bracket FCN Flash Mounting Plate is a flash mounting plate that includes three custom inserts. One insert is for the Canon Off-Camera Cord 2, one for the Nikon SC-29, and one for the SC-17 and 28 off-camera TTL cords. These inserts, combined with the flash plate, are designed specifically for their respective flash units, will maintain proper alignment with the lens, and prevent twisting.