T-REX 450 Heli Upgraded Vertical Tail Fin

This version of tail fin is much better then original:
-doesn't make an aerodynamic shadow (less tail failure while backward fly!!!)
-has a small plate in the bottom (doesn't fit in the grownd, less touching the grownd by tail blades)
-combines 2 heli parts (less screwing).

If you need for T-rex 500 - it is here https://www.thingiverse.com/thing:2756152

So, fly more, pay less!