Specifications:
Brand: Andoer
Material: Aluminum Alloy
Size: 50cm/20inch, 40cm/16inch, 30cm/12inch (Optional)
Track Width: 5cm / 2inch
Plate Size: 8.9 * 8.9cm / 3.5 * 3.5inch

-50cm
Item Size: 52 * 7.5 * 5cm / 20.5 * 3 * 2inch
Item Weight: 840g / 1.8Lbs
Package Size: 56 * 12 * 8cm / 22 * 4.7 * 3.1inch
Package Weight: 1200g / 2.64Lbs

-40cm
Item Size: 42 * 7.5 * 5cm / 16.5 * 3 * 2inch
Item Weight: 750g / 1.65Lbs
Package Size: 46 * 12 * 8cm / 18 * 4.7 * 3.1inch
Package Weight: 1030g / 2.27Lbs

-30cm
Item Size: 32 * 7 * 5cm / 12.6 * 3 * 2inch
Item Weight: 679g / 1.5Lbs
Package Size: 36 * 12 * 8cm / 14 * 4.7 * 3.1inch
Package Weight: 870g / 1.9Lbs

Package List:
1 * Slider Track
2 * Wrench
1 * Carry Bag

Note:
Ball head and phone clip are not included.