2.6” version o' t' Competitor series, already have t' 4” and 5” built and flown and now this one. Avast! 2.6” in diameter with a 54mm motor mount. 

actually built this t' keep on standby, super easy t' prep and versatile, ya bilge rat, if I lose a loc on me gps trackin' on another bird this one is set up t' go up smartly and attempt t' reacquire t' signal with t' lost feature featherweight trackers use.