Tail & tailblades for 450 class heli

This is a little (replacement) tail for 450 class helis (I use it on a KDS450).
In contrast to the stock one, it includes a horizontal fin, I have removed the original horizontal fin.
Update: tail450_2 is a version without holes, depending on print settings it is as light. I used 0.15mm layers, 0.6mm top/bottom, 0.8mm walls, 10% infill
I have also included my tail blades. They work good for me with moderate rpm (about 2200 at main rotor), but use at your own risk especially at higher rpm!!!