These are the Servo Arms for the Tactic TSX100 Micro Servo, TACM0100. FEATURES: Plastic construction, X-shaped Replaces worn or broken servo arms INCLUDES: Three servo arms for the Tactic TSX100 Micro Servo REQUIRES: Installing on servo spline SPECS: Length of Long Section: 0.79" (20mm) Length of Short Section: 0.69" (17.5mm) Center Diameter: 0.18" (4.5mm) jxs 01/09/07 ir/jxs