flybarless or multibladed rotorhead head tool headtool
(2pc M3 screw is included)
Headtool.
Ideal tool to measure pitch and collective range of your flybarless or
your multibladed rotorhead. Simply mount tool in place of headbutton,
put your old flybar (or something similar) through, use M3 lock screw to fasten
flybar and use pitch gauge for measuring.

Also useable for helis up to 700er class.
Note: to use for bigger sized heli, please order heli screw package separately !"

reference: how it will work as :

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