Carbon Fiber Square Tube 1.7x1.7x1mm Inner Diameter 400mm Length Pultruded Carbon Fiber Tubing for RC Airplane 1 PcsCategory: Carbon TubingLightweight. 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 ouside with rounded innerCross Section Size: 1.7x1.7mm square, 1mm inner diameterOverall Length: 400mmFinish Type: GlossyPackage Content:1 Pcs 400mm Length 1.7x1.7mm x 1mm Inner Diameter Carbon Fiber Square TubeFor CALIFORNIA residents only: WARNING: This product contains chemicals including DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm.Please note that by posting this Proposition 65 warning, we are notifying you that one or more of the Proposition 65 listed chemicals may be present in a product. With Unique Bargains' products, the exposure to these chemicals may be of no significant risk to you, but out of caution, we have elected to place this warning on our site to make sure our customers are informed.You can find more information at http://www.oehha.ca.gov/proposition-65/about-proposition-65.