Features 1、Ergonomic Design: One knob locks all positions and a single lock all moving parts, easy to use, suitable for people of all ages. 2、Corrosion Resistant: Arm is made of 28mm/1.1in aluminum tube, the surface is electrostatic sprayed, and can be used in a variety of environments. 3、Two Part Connection: Arm is divided into two parts, which can be easily connected. Each part is operated independently of the other parts and can be adjusted in various ways. 4、360° Rotating Arm: When adjusting the angle, you need to press the button to quickly change the angle and allow the arm to be moved to any of the 20 gears. 5、Strong Compatibility: Lamp holder is equipped with 1/4in screws, which can be connected to cameras, monitors and other equipment. Each arm has a 3/8in screw hole, which can expand more equipment. Specification Item Type: Heavy Duty Boom Arm Color: As Pictures Shown Material: Aluminum Alloy Maximum Load: 10kg/22.0lb Weight: Approx.962g/33.9oz Two Brackets Size: Approx. 63cm/24.8in Suitable for: Easily Connect Monitors, Flashes, Led Lights, Microphones, Cages, Smart Phones and Other Devices. Package List 2 x Heavy Duty Boom Arm