A carbon fiber square tube is a hollow, square-shaped structural component made from carbon fiber reinforced polymer (CFRP). It is lightweight yet exceptionally strong and stiff, offering a high strength-to-weight ratio. These tubes are commonly used in applications where both strength and weight savings are critical, such as in aerospace, automotive, robotics, and sporting goods. Carbon fiber square tubes are highly resistant to corrosion and can withstand high stress, making them ideal for structural frames, supports, and reinforcements. They are available in various sizes and can be customized in terms of thickness and finish for specific applications.