This is a .04 x 0.18 x 23.6" Carbon Fiber Hollow Tube from ElectriFly. FEATURES: Many uses for general craft, building and architectural projects Unfinished black matte INCLUDES: One Carbon Fiber Hollow Tube SPECS: Length: 23.6" (600mm) Outer Diameter: .18" (4.5mm) Inner Diameter: .04" (1mm) jxs 03/30/11 ir/jxs