SAB JR Servo Horn

To get the right alignment you need these

The holes are marked for convenience in mm distance. pick the side and apply ball link, its that easy.
Strong enough for 3D without deflection but will break away when needed. Best ranked just below metal arms IMO.

Perfect fit

No fuss slip on older spectrum servos and distance is well marked

This is much stronger than what my servo came with

You guys are awesome I really like these horns work great with Vbar I use them on all my helis