Tubes made of braided carbon fiber in a female mold with pressure provided from inside. Hot cured resin is used for the tubes. This ensures they are geometrically stable up to 118 degrees C (245 F)

Tailplane tubular spar 3 mm. Product/Number: 037
Outer Diameter 3 mm
Inner Diameter2.6 mm
Length 370-430 mm
Weight 1.15-1.30 gram