?Reduce Air Resistance?:This shark fin diffuser designed to increase a vehicle's aerodynamic performance.Reduces car's drag about 1.6% and increases down force.Reduce the airflow into the bottom, improve the steady of vehicle during fast driving. ?Excellent Appearance?:Shark fin and clean lines design, beautiful appearance, personalize and update your car, stylish design gives a customized look.Give your vehicle a more aggressive racing look. ?ABS Material? :Made of high Quality ABS, waterproof, lightweight but durable, not easy to break. ?Universal Fit?:Universal fit for most cars like Acura Honda Toyota BMW Chevrolet Ford etc, please measure your vehicle before purchasing.Dimensions: 22.99 x 5.98 x 1.97 inches. ?Easy Installation?:Install with screws (need drilling holes) or with adhensive double sided tape, but professional installation is still recommend.