Two heavy duty red plastic servo output arms (horns) that fit all KST servos with 6 mm diameter 25 tooth output splines. We think this is most KST servos greater than 12 mm thick.
Also fits most Blue Bird servos apart from the tiny BMS-101 and A10 series.
Contains two substantial plastic output arms and retaining screws only. The distance from the servo output shaft axis to the holes ranges from 6.5 mm to 20 mm.