The 4 way Macro focusing rail slider made of aluminum.
There is a 1/4 inch standard screw that fits most of professional DSLR, like Canon, Nikon, Sony.
The 4-ways Macro Focusing Slide Rail can be adjusted in four directions: forward, backward, left and right. It can adjust the camera distance easily
The rail adopts durable metal slider, and a geared drive system which enhances accuracy
Positive locking knobs assure rock-steady focus.