This is the Wing Tube for the Great Planes Revolver / .46-.70 ARF (GPMA1018). / / FEATURES: Sturdy hollow aluminum construction / / INCLUDES: One Wing Tube for the Great Planes Revolver ARF / / REQUIRES: Installation in the wing / / SPECS: Length: 18.70" (475mm) / Diameter: .70" (18mm) / / tlw 8/28/07 / ir/jxs