Attach this base to your boat and have the ability to remove the radar mount and the radar dome for hauling or storage this item can be added to any of our radar mounts and we can custom drill it to fit existing holes in your top or arch 7" X 7 BASE OR 8" X 8 BASE OR 10" X 10 BASE COMES WITH S/S HARD WARE AND SAFETY PINS AND S/S CABLE and WING NUTS AND CAP --PIC #5 IS A CUSTOM BASE for a customer to match the holes in the arch or roof