The Tripod Extension Tube is made of aluminum alloy with a CNC oxidation process, making it strong and durable. It has 2 adjustable sections with a length range of 25-41cm, allowing for versatile usage. The tube features a 1/4 inch screw mouth for easy installation on tripods or brackets, and can switch between 3/8 inch and 1/4 inch screw interfaces without needing to change screws. This extension rod is designed to increase the height of tripods for convenient photography. Overall, it is a versatile and practical tool for photographers.