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