REDline 3" GMC Black Real Carbon Fiber Aluminum Short Stubby Screw-On Mast Car Antenna Fits Most Vehicles with Screw Type Antenna - Package Includes Carbon Antenna + 4 Different Male Screw Size Adaptors Screw Diameter and Length Are Shown in the Sub-Image - Please Double Check Before Placing Your Order 3 Inch / 76mm Black Carbon Fiber + Black Aluminum Antenna Mast Made of Top Quality Durable Carbon Fiber and T-6061 Billet Aluminum Material Universally Designed but May Require Modification on Some Vehicles