A mount for the antenna that comes with Banggood NRF24L01 kit. The mount provides a nice clean install into the rectangular hole at the back of the DEVO 7E. Here is a link to the NRF24L01 kit: http://www.banggood.com/DEVO-Transmitter-Tuner-Modified-for-FBL80-FBL100-WLtoys-V922-p-89812.htmlApply bit of thick CA around the sides of the rectangular hole on the back of the DEVO 7E. Press in the mount flush and let dry. Run the antenna wire inside. Squeeze the sides of the antenna base and push it in from the outside. It is a nice snug fit. Use a bit of patience and care.