Sturdy aluminum construction (silver in color). Precisely manufactured of high-quality aluminium, this dual arm effortlessly implements the adjusting power of your servo. For use with the Rhino Multiplex Servo. 3 holes in M3. Length 55 mm. Hole 1- 12 mm. (distance from the center). Hole 2- 20 mm. (distance from the center). Hole 3- 24 mm. (distance from the center).