The versatile Articulating Arm with Dual Ball Heads (1/4""-20 screw) from SmallRig mounts an accessory on your camera rig securely and flexibly. Both ends of the arm feature a 1/4""-20 screw and a tightening thumbwheel for easy accessory mounting, with rubber pads protecting the equipment from scuffing and scratches. There is an allen key to tighten the thumbwheel - a great added feature if a heavy device is attached to the head such as a monitor. Both ball heads are secured using the single, large thumb lever and are well-suited with a wide range of devices such as field monitors, LED lights, and audio equipment. The arm has a load capacity of up to 5 kg (11 lb).