1. Two-way angle adjustable, better angle 2. Aluminum alloy support rod, sturdy and 3. Double j-shaped buckle, can connect multiple devices, double anti-skid design 4. The backpack fixing bracket can be matched with a quick release bracket, which can be easily connected to any device 5. Locking bolt design, adjustable tightness, suitable for scene colour:Black Material:Aluminum alloy size:Quick release base: 79.3 x 33 x 46.5mm, backpack bolt bracket: 120 x 75 x 35mm Package Contents: 1 x backpack bracket 1 x base 1 x screw Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.