2-way Macro Focus Rail Slider Long-type Tripod Head Plate(Black)

1) For macro shooting, or shooting film negatives

2) Locking knob and sliding the side knob

3) Lateral scale, moving more accurate

4) Activities Scope: 16cm

5) Bottom there is alveolar, fine sliding accurate positioning; the bottom of the standard 1 / 4 screw holes, can be directly screwed to a tripod, head to use

6) Size: 16cm x 9.5cm x 1.5cm

7) Material: metal