External Diameter: 10mm Internal Diameter:8mmLength:350mm Material: 100% pure carbon fiberSurface: Plain glossy finish Package Includes: 2 pcs 10mmx8mmx350mm carbon fiber tubeApplication:Widely used in RC model , agricultural equipment, fishing equipment,machinary, automobile,sports equipment, kite, handicraft, tent, windmill,umbrella,decorating parts and so on