This is an injection-plastic aircraft model kit.
From the manufacturer:
This accurately depicted Ki-61 Id type Hien with an elongated nose and slim fuselage will be 18.7cm long with a wingspan of 25cm when completed. Ha-40 V12 engine features supercharger; cockpit includes 20mm cannon ammo cases and oil tank. Fuselage underside radiator is highly detailed. Choose open or closed canopy; comes with a seated pilot figure, two drop tanks and decals for two 244th Air Group aircraft marking options.
Molded in gray and clear plastic.