Trumpet collars are generally used with flagpoles where a shoe base is welded to the bottom, however, they will work with any pole. A split collar can be useful when replacing or adding a collar to an installed flagpole without removing the pole from the foundation sleeve. The collar is split in half and mounting tabs with screws are installed on the under side of the collar. The quantity and size of the mounting tabs may vary depending on the size of the flash collar ordered.