4 way Macro Shot Focusing Focus Rail Slider for CANON NIKON SONY Camera Two slider allow movement in four directions, right, left, forward and backward. the macro slider has smooth rack and pinion movement to provide extremely fine focusing adjustment. Positive locking knobs assure rock-steady focus. It can be divided into two one-way macro slider, it is very simple to mix and split. Material: Metal, Color: Black. Suitable for: All DSLR or DC with standard 1/4" screw hole. 7-10 days to be delivered, Fulfilled By Amazon