MOUNT WHAT YOU WANT - This versatile bracket is designed to mount what you want to your vehicle. Great for an antenna, light, or flag. VERSITILE DESIGN - Made for antennas, flags, small LEDs & spotlights. This versitile bracket offers 180 degrees of rotation. EASY INSTALLATION on roof racks or the Pioneer system using a C-channel mount and direct attachment to most popular bull bar brands. Can be perpendicular or parallel mounted. BUIT TOUGH & DURABLE - Made of robust powder coated steel for maximum durability and corrosion resistance. ANTI-ROTATION hardware can be fixed by hand FOLDING MECHANISM - Folding mechanism can be mounted perpendicular or parallel to the vehicle. EASILY ROUTE CABLES - Designed with a Large Internal Space for Hardware Cabling EASY TRANSITION - Easy to Change the Height of your Antenna by folding it down - especially when coming in to town after traveling offroad. BETTER RECEPTION - The elevated antenna position allows for greater reception. SPECS: Post Hole Dimension: 17mm. Mounting Hole Diameter: 13mm. Warranty: 3 Year Limited Manufacturer Warranty.