Adapters for balancing self-tightening 6mm DJI blades (OBSOLETE).

THIS DESIGN HAS BEEN UPDATED. SEE:
http://www.thingiverse.com/thing:737600
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This file will print end adapters for 3mm rod for balancing self tightening 6mm CCW and CW blades as used on a DJI Phantom ande others.
I used polished 3mm tool steel rod I bought on Amazon, about 6" each.
The .stl file prints two sets CCW and CW. The photo shows two more I also printed from the file "End_cap_adapter_for_Phantom_20_x_8mm.stl", by jjisnow. (DJI Phantom 2 Prop balancin