Carbon fiber rod(include solid carbon fiber round rod,carbon fiber square rod,carbon fiber rectangular rod,carbon fiber flat bar,etc.),high modulus carbon composite rod high modulus carbon composite rod are made from continuous carbon fibers in a resin matrix of either vinyl-ester or epoxy as noted in below product specifications. They are extremely stiff, lightweight and have a very low coefficient of expansion. high modulus carbon composite rod have incredible linear strength due to the orientation of the carbon fibers and are used in a variety of applications. Product Description Packaging & Shipping