1、Adjustable Dual Ball Heads: The friction arm features two ball heads that allow for easy adjustment of the position and angle of devices mounted on the arm, making it perfect for DIY projects such as video recording. 2、Built in Cold Shoe Base: The ball head extension arm comes with a built in cold shoe base, allowing it to be mounted on camera cages, handles, plates, or directly on for Nikon, for Olympus, and other cameras. 3、1/4 Inch Screw Interface: Equipped with a 1/4 inch screw interface, the friction articulating arm is compatible with various accessories such as action cameras, mirrorless cameras, monitors, LED video lights, microphones, or phone clips. 4、Lightweight and Portable: Made of premium aluminum alloy material and precise CNC processing, the friction articulating arm provides strong locking force and weight bearing capacity, while remaining compact and portable. 5、Compact and Lightweight: With a maximum load capacity of 4.4lbs/2kg, this dual ball head friction articulating arm is an ideal tool for traveling photographers, allowing for easy carrying anytime, anywhere.