Features: Suction Cup Mount BracketSuction cup combines with flexible bracket, and connected through a small metal rail, easy to install by the included hex wrench and you can adjust the bracket position freely. 1/4 inch & 3/8 inch thread on the suction cup adapt to various accessories expansion. 1/4 Inch Screw Connection3kg recommended load weight and with standard 1/4 inch screw connector, the suction cup mount is compatible with various devices, such as sports cameras, mirrorless cameras, digital cameras, mini DV, etc. 360 Rotatable BallheadsDual flexible ballheads design and both ballheads support 360 rotating. You can adjust the usage angle freely. With a large side knob to tighten or loosen the ballheads, stable and reliable to use. Strong Adsorption Forces4.5 inch larger air pump vacuum suction cup with stronger adsorption forces enables you to fix your devices to car sunroof, car door glass, car windshield and other glass surface stably. Warm TipsBefore use, please ensure that the adsorption surface is kept dry, flat and clean, and the bottom of the suction cup is intact and clean to avoid poor adsorption. In the driving usage scenes, the hanging weight is recommended to be within 0.5kg. And it is recommended to use with the lanyard and check every 2 hours. Specifications: Brand: Ulanzi Model: SC-02 Material: Metal + Rubber Suction Cup Size: 4.5 inch Recommended Load Weight: 3kg Horizontal Load Capacity: 60kg Vertical Load Capacity: 40kg Item Weight: 525g/ 1.16lbs Packing List: 1 * Suction Cup Mount 1 * Ballhead Arm Mount 1 * Mounting Rail 1 * Hex Wrench 1 * Storage Bag