Universal roof fin. Made of high grade ABS plastic with precision CNC cutting, reliable and easy to fit.
KUSHI (くし) in Japan means Brush.
You can cut it and fit on your cars roof using heat gun to make it fit perfect. Designed to separate air flows from the roof top those are also called vortex generators, which are supposed to help with aerodynamics by making spoilers more effective. The same fins are found on aircraft to improve the effectiveness of control surfaces.