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" chord length and wing is complete with internal reinforcement tubes. The ribs are not available separately. The 3/16" thick mount tabs have 3/8" diameter front and 5/16" diameter rear holes with 5-7/8" spacing. Available 36", 40", 44", 48" widths. Tip plates are removable, interchangeable, and the profiles available are designed for equal performance. Custom built wings are available up to 70" wide as a special order.