Feature:1. 3 track lengths(50/40/30cm) for your option.2. High quality aluminum alloy body, can support 2-5kg load.3. Sliding plate with 1/4\" screw and 3/8\" convertible screw , you can mount ball head on it easily.4. 4 high precision bearings guarantee super smooth and silent sliding effect.5. There are several 1/4\" \u0026 3/8\" thread for you to mount multiple video accessories such as tripod, LED light, Monitor, mic \u0026 so on.6. 3 track lengths(50/40/30cm) for your option. High quality aluminum alloy body, can support 2-5kg load.7. Sliding plate with 1/4inch screw and 3/8inch convertible screw , you can mount ball head on it easily.8. There are several 1/4inch \u0026 3/8inch thread for you to mount multiple video accessories such as tripod, LED light, Monitor, mic \u0026 so on.9. You can screw the non-slip rubber foot to slightly adjust height. Sent with a portable carry bag for outdoor photography.Specification:Features:3 track lengths(50/40/30cm) for your option.High quality aluminum alloy body, can support 2-5kg load.4 high precision bearings guarantee super smooth and silent sliding effect. There are several 1/4" & 3/8" thread for you to mount multiple video accessories such as tripod, LED light, Monitor, mic & so on.You can screw the non-slip rubber foot to slightly adjust height.Sent with a portable carry bag for outdoor photography.Specifications:Brand: AndoerMaterial: Aluminum AlloySize: 50cm/20inch, 40cm/16inch, 30cm/12inch (Optional)Track Width: 5cm / 2inchPlate Size: 8.9 * 8.9cm / 3.5 * 3.5inch-50cmItem Size: 52 * 7.5 * 5cm / 20.5 * 3 * 2inchItem Weight: 840g / 1.8LbsPackage Size: 56 * 12 * 8cm / 22 * 4.7 * 3.1inchPackage Weight: 1200g / 2.64Lbs-40cmItem Size: 42 * 7.5 * 5cm / 16.5 * 3 * 2inchItem Weight: 750g / 1.65LbsPackage Size: 46 * 12 * 8cm / 18 * 4.7 * 3.1inchPackage Weight: 1030g / 2.27Lbs-30cmItem Size: 32 * 7 * 5cm / 12.6 * 3 * 2inchItem Weight: 679g / 1.5LbsPackage Size: 36 * 12 * 8cm / 14 * 4.7 * 3.1inchPackage Weight: 870g / 1.9LbsPackage List:1 * Slider Track2 * Wrench 1 * Carry BagNote:Ball head and phone clip are not included.Package List:1 * Slider Track2 * Wrench 1 * Carry BagNote:Ball head and phone clip are not included.