Rear wings are built with CNC machined ribs and durable .032" thick aircraft aluminum skin using wind tunnel proven NACA wing profiles. Ribs have 15" cord length and wing is complete with internal reinforcement tubes. The 3/16" thick mount tabs have 3/8" diameter front and 5/16" diameter rear holes with 5-7/8" spacing. Tip plates are removable, interchangeable, and the profiles available are designed for equal performance. The ribs are not available separately. We can custom build wings up to 70" wide.