Review on Enhance Your Vehicle's Performance with Alpha Racing Air Vortex Generator Diffuser Shark Fin 10pcs Set Kit - Compatible with Spoiler Roof Wing Pointed End Style Carbon Fiber Pattern by Jeremy Black

High gloss cheap plastic. I have not used them as they are too high above the roof surface. The slats are very flat and cannot follow the natural curvature of the roof, causing the leading and trailing edges to already peel off. The glue used is too long and leaves a 2mm difference between the surface and the body of the fin, giving it a cheap look. The photos show the dimensions of what I received as there are reviews showing different specifications. Usage is completely flat and people won't look at them closely.