Dynamite`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. The "full" arm has drilled and tapped holes, as well as "blank" holes to accommodate a wide range of throttle and brake link-age requirements. Sold one per package and available in four colors, they are available in both JR/Airtronics/KO and Futaba versions.