Hanger 9 HD Machined 1/2 Servo Arm 25T Futaba

Hangar 9's precisely Machined Aluminum Servo Arms offer maximum steering control, as well as instantaneous throttle and brake response by eliminating the flex often associated with nylon and plastic servo arms. These 1/2 arms are drilled and tapped for 2mm-linkage hardware. 

Specs

Center of servo mounting hole to center of first hole: 0.55 in (14mm) 
Center of servo mounting hole to center of second hole: 0.70 in (18mm) 
Center of servo mounting hole to center of third hole: 0.85 in (22mm) 
Center of servo mounting hole to center of fourth hole: 1.00 in (25mm)