This is the Antenna for the Transmitter (TACJ0401) used with the / HeliMax Axe EZ Micro EP Heli. / / FEATURES: Telescopes from 6.5" (165mmm) to 38.5" (978mm) / Female threads inside antenna base / / INCLUDES: TX Antenna used with the HeliMax Axe EZ heli / / REQUIRES: Threading into transmitter / / jxs 01/05/07 / ir/jxs