This is a replacement exhaust set designed for the 1/48 Hasegawa Macchi MC.202 kit. The parts feature shallow hollowed exhaust openings with added weld bead detail, providing a more realistic appearance compared to the solid kit parts. Simply remove the original exhausts and install these replacements in the same mounting location. No major modification is required, but minor fitting adjustments may be necessary depending on individual kit tolerances. The parts were test-printed to verify general fit, but minor adjustments may still be required depending on kit tolerances and printer differences.