Smaller motor mount for 12mm round tube, or 10x10mm square
Smaller boom block motor mount - for 12 mm round tubes, 10x10mm square and 12x12mm square booms.
For standard size motors (28mm diameter) from 16mm to 19mm mount screws distance.
Suggested max motor thrust 600-700g / motor.
TOP PLATE ONLY - no hardware and no boom blocks included