Feature: 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 Note: Maximum Load 10kg/22.0lb.