Servo Horns for SES?

What kind of servo horns can I use with the servo brackets fom SES?

Not sure which brackets you have. I bought the Aluminum Long “C” 805BB/MG Servo Brackets
Model Number: ASB-205

I am using Hitec HS-5805MG servos and they fit very well.

jerry

lynxmotion.com/s-5-ses-3d-models.aspx

The pattern is 4 x 0.09" holes spaced on a 0.656" circle, with an 8mm hole in the center.
This measurement apply to all the hitec "STANDARD SIZE servo horns.