Extension rod measuring 50mm in length, with external thread ranging from 1/4inch-20 inches at the top and internal thread ranging from 1/4-20inches at the bottom, used for connecting other products Standard 1/4-20 male stand can hold external monitors, microphones, lighting, and many other accessories Aluminum alloy, ensuring safe daily use, durability, lightweight, small structure, easy to carry and use. easy installation, and stability Camera stand screw adapter, connection the camera to a tripod or microphones stand, holds the camera or microphones in a stable position, and is suitable for any camera tripod, monopod, camera equipment, lens collar, lens plate, and lamp holder 15mm outer diameter tube with 1/4 male and female end, sports camera accessory, 50mm long, used for connecting photography systems