uxcell Aluminum Servo Arms Double Arm 23T 4-40# Thread Red, for 4 Inch JR

23 Thread Spline & 4-40#(American Standard) thread.Suitable for 4 Inch JR. Specifications23TThread: 4-40#(American Standard)Material: CNC AluminumMiddle hole inner diameter: approx. 2.6mmBigger 4 holes inner diameter: approx. 4mmMaximum Thickness: approx. 5mmMinimum Thickness: approx. 2.5mmMaximum Width: approx. 13mmBody Width: approx. 8mmTotal Length: approx. 109mmDistance from hole center to hole center:4 inchColor: Red Package Content:1pc x Aluminum Servo Arm