CS-V500 Retractable Video Slider 50cm Dolly Track Stabilizer 1m Actual Sliding Distance Load Up to 8kg (17 lb) for DSLR Cameras

Twice as original sliding distance, conceptionally retractable.

8pcs Ball-bearings design, multiple adjusting way of sliding tightness.

Sliding Stopper built-in.

Super smooth transporting belt and track design.

1/4" and 3/8" threads built-in the bottom for connecting with tripod.

1/4" and 3/8" screws built-in the top for connecting with ball-head.

Built-in Spirit Level.

High precision CNC technics.