Let the SmallRig Magic Arm with Dual Ball Heads revolutionize your photography and videography experience. This compact, lightweight tool, model number 3874, boasts a 1/4"-20 screw and Arri locating screw, making it a versatile addition to your equipment arsenal. Each of the dual ball heads measures 20mm in diameter and is equipped with stretchable pins to prevent any unwanted twisting, ensuring your camera or other equipment stays firmly in place. The adjustable thumb lever is a key feature, designed to securely lock the ball head at your desired angle. For added convenience, a small magnetic wrench is included at the bottom, allowing you to easily tighten the thumbwheels and ensure optimal stability.The ball head clamp is thoughtfully designed with notches at both ends, providing additional space for flexible adjustment of ball heads and any accessories mounted on them.