Series models "Short kits" in 1:20 scale are intended for advanced modelers. They can be built as RC, powered by an electric motor, or as a free flight models powered by either rubber band, CO₂ engine or electric motor.

Each kit contains a drawing. Other content is determined by the type of the original. Vacuum molded fuselage halves are always included. But eventually the wing and tail surfaces are supplied as well. The base polystyrene foam has an integral surface layer, that markedly increases the resistance of the generally soft material to scratching, denting and gouging. Kit also contains details of vacuum molded thin plastic.for example wheels, spinner, engine cowling, exhausts, engine, pilot, canopy. Content of each kit is evident in the photos.