This is a pair of Du-Bro Long Dual Servo Arms for Hitec, Tower Hobbies, and Hobbico Servos.
Dual arm design allows straight and in-line movement of control surface of large aircraft
Long fiber composite construction for high strength
Heavy duty ball links for 4-40 pushrods
Two Long Dual Servo Arms, two 4-40 Ball Links, two 3mm Locknuts, and two 3x12mm Screws
Length: 1.343" (34.13mm) from center to end mounting hole