This is a metal stand for the Su-27 Flanker from JC Wings at 1/72 scale. It is made of two metal parts, the base and a stem which are attached together by a single screw. It has 3 plastic pieces that make up the mount for the airplane model.
The plastic pieces are held together to the stem by a screw. The model attaches to the model by mating the mount to the model.
The base measures 4.5 inches long and 3.5 inches wide and it is 4 inches high.