Hello,

I'm want to use Power HD High-Speed Digital Micro Servo DSM44, which is 3.5 mm diameter 20T teeth gear.

I'm trying to find metal horn for this motor, to add pin with screw on this arm, instead thread attachment, which seems only possible way with default plastic hardware included with DSM44, but this way is not suitable in my particular case.

Most horns I've found on internet is 25 - 23 teeth, then diameter also should be wider

I can't figure out, how to choose adjustable aluminum arm for particular motor, from 15-20 mm length, and able to be fixed on 3.5 diameter gear with 20T

Any guide, advice or example would be very helpful

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