Carbon Fiber Square Tube with Rounded Inner Shape Size. 4mm x 4mm side length in cross cection(Square), 3mm inner round diameter, 200mm overall length. Pultrusion. Pultruded tube means that all the fibers are in one direction, which makes it stronger than the woven tube in tension. Lightweight. 1.5g/cm3(1.5 Gram per cubic centimetre) in density, strong as metal but only one fifth in weight. Corrosion-resistant and heat-resisting. Smooth surface. Made from high tensile and modulus unidirectional carbon fiber, with polishing finish. Application. Pultruded carbon fiber tube is used for racing drones, RC helicopter wing, RC airplanes and RC sailboats, kite spars. Tube Shape: Square with rounded innerCross Section Size: 4x4mm square, 3mm inner diameterOverall Length: 200mmFinish Type: GlossyPackage Content:2 Pcs 4x4mm x 3mm Inner Diameter Carbon Fiber Square Tube
