Features:
Twice as original sliding distance, conceptionally retractable.
40cm track, 80cm actual sliding distance, load up to 6kg.
Super smooth transporting belt and track design.
Qualified aviation aluminum alloy, CNC technics, preciser and more stable.
1/4" and 3/8" screws built-in the top for connecting with camera or ball-head.
1/4" and 3/8" thread holes built-in the bottom for connecting with tripod.
Built-in gradienter helps you find the balance quickly.
Many ball-bearings design, use hexagon wrench to adjust sliding tightness.

Specifications:
Material: Aluminum Alloy
Model: CS-V500
Length: 50cm / 19.7in
Height: 6cm / 2.4in
Sliding Distance: 1M / 39.4in
Loading: 6Kg / 13.2Lbs
Item Weigt 2.24Kg / 4.9Lbs
Package Size: 55 * 13 * 9cm / 21.7 * 5.1 * 3.5in
Package Weight: 2.415Kg / 5.3Lbs

Package List:
1 * Sliding body
1 * Carrying bag
1 * Hexagon wrench