USA Sealing Carbon Fiber Rod – Unidirectional – 1/8" Diameter x 4 ft. Long

Unidirectional carbon fiber has its fibers running in a single parallel direction so it is ideal for applications where front-to-back strength is important. Long, tubular structures that move in a forward-and-reverse direction, such as rockets, airplanes, boats, and bicycles, all use unidirectional carbon fiber as reinforcement.