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Aluminum Large Single Servo Arm for Futaba ServosOverall length 2". Drilled for control radius of 1.5" (38.1mm). Threaded for 3mm fasteners. Your ball joints made for 3mm or 4-40 bolts through the balls can be installed on this servo arm with 3mm fasteners. Horn fits on splines then clamps with tightening of two fasteners requiring a 2mm socket head wrench. No horn to spline slop is possible with this horn.
SKU Number: RRCLS3.5FJ