This is a replacement cover for the fatshark circular polarized antennas (for when you smack up your stock covers with your race drone) Printed ABS in the pictures, 100% infill, is designed in MM, and snugly holds a 5.8ghz circular polarized fatshark antenna. I personally want to fill it with epoxy, but dont know how this will effect the RF range. You need to glue the top and bottom plates together. If printed in ABS you can use acetone to to this for a "chemical weld"