Flashpoint rail sysytem provides rack and pinion movement, fine focusing adjustments. Two 6″ rails allow movement in four directions, right, left, forward and backward. Mounts on, and accepts 1/4×20 threaded screws, will fit most tripods and copy stands. Positive locking knobs assure rock-steady focus.
This focusing rail is recommend to use with 55mm Nikon on 60mm Canon lens. Not for larger lenses
