This premium set brings you four complete kits of the legendary Czech biplane fighter, celebrated for its role in the 1930s and early WWII. Packed with Eduards signature detail, this Royal Class edition includes finely molded plastic parts, photo-etched details, masks, and a generous selection of marking options to create multiple historically accurate variants. Presented in an exclusive collectors box, this limited-edition release is a must-have for aviation enthusiasts and modelers who appreciate both craftsmanship and history.