Pro Trucker Pickup Aluminum Truck Box Mount 1/2 INCH Hole for CB Radio Antenna Pickup Truck Tool Box Mounting Bracket for CB Radio Antenna 1/2" Diameter Hole That Supports The Most Heavy Duty CB Radio Antennas and Mounting Studs Constructed of Heavy Duty, High Quality Aluminum and Is Guaranteed to Last for Years Easy to install and securely fastens to the truck box to ensure great usability and easy concealment Overloaded Mobile is an authorized re-seller of the Pro Trucker product line