Amazon.com: KARBXON – Round Carbon Fiber Rod - 3mm X 1000mm – Pultruded Round Solid Rod - Black Matte Finish - Pure Solid Carbon Fibre Round Tube shafts - for RC Planes-Drones,
Amazon.com: AIMIMI Carbon Fiber Tube 6mm x 3mm x 500mm Multi-Purpose Carbon Fiber Bar Support Poles for RC Airplane Craft 3mm Matte Pole 4 pcs,6x3x500mm : Industrial & Scientific