MPI 4" Double HD 4-40 Aluminum Servo Arm, for Futaba, by Maxx Products

Heavy duty Anodized Aluminum Servo arms designed for Hitec, Futaba, Airtronics, & JR. In lengths of 1", 1.25", 1.5" for single arm applications, and 3" and 4" for double arm applications. All come with 4-40 thread.