RC Control Horns
thingiverse
They call them RC Control Horns - exactly what they claim to be. You just need M2 screws, don't downscale below a 2mm thickness or they become too weak for use, and print with the flat front side of the horn facing downwards in T-shape position for ultimate strength. Printing it upright will mess up layer orientation and create weak points everywhere.
Download Model from thingiverse
With this file you will be able to print RC Control Horns with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on RC Control Horns.