uxcell Aluminum Servo Horn 25T 21A Blue, 3mm Hole Double Arm for Futaba

25 Thread Spline.21A,Suitable for Futaba Servo Motor. SpecificationsMaterial: AluminumHead hole inner diameter: approx. 3mmArm hole inner diameter: approx. 1.5mmMaximum Thickness: approx. 6mmMinimum Thickness: approx. 2.2mmMaximum Width: 13mmTotal Length: 39mmDistance from hole center to hole center:8mm, 11mm, 14mm, 17mmColor: Blue Package Content:1pcs x Steering Arm