It ain't pretty, but it works!

Maximum 45 degree angle from center.

8.5 mm center-to-center

suitable for 1.7mm clevis pin diameter, like this one: https://rconline.se/produkt/plast-bygg-lek/byggmaterial/linkar-horn-gangjarn-mm/stotstangsanda-metall-2-56-2/

fits like a glove on my SRT W35 servo with M3x8mm screw holding it in place.

printed with PLA, 0.1mm detail