Notice :Please kindly check your car model and make sure the model fits in case of buying the wrong product.Specifications :Color : Carbon Fiber Look, Not real carbon fiber!!!Material : High ABS PlasticAttachment Method : ScrewsPlace on Vehicle : Rear, LowerManufacture Type : Aftermarket ProductManufacturer Part Number : 3855451BKFitment : For Ford Mustang 2015-2021 (After June 2015)Package Includes :4PCS / 1Set Rear Bumper Diffuser Lip KitFeatures :- and high .-According to the original factory specifications.-Gives your vehicle a new style and appearance.-Perfect cover that is useful, flexibility and so practical.-No Modification or Cutting Required.Note :1. Please allow 0.5-1 inch difference due to manual measurement.  (1inch=2.54cm)2.  No installation instruction included, professional installation is highly recommended!