ARRIS 23mm x 25mm x 500mm 3K Roll Wrapped 100% Pure Carbon Fiber Tube Glossy Surface (2PCS) Length: 500mm Outer Diameter: 25mm Inner Diameter:23mm Material: 3K Pure Carbon Fiber Use for Multicopter Package Includes:2 pcs x 23mm*25mm*500mm carbon fiber tube (Glossy Surface)