55Micro Servo, Programmable Screws but they also understand that

but they also understand that some people may not have the time or confidence for the assembly of an R/C model that is why we have come up with the X-SA (Expert-Semi-Assembled) series of models

The adjustment is done with a single set screw that engages with a spring cam

This device also works with some ESC of QUICRUN series

So much fun to craft and great gift for family

55Micro Servo, Programmable Screws but they also understand thatFeatures: Fully Programmable Digital Servo Pulse Width Modulation Control CNC Aluminum Casing Metal Internal Gears BEC Not Required Technical Specs: Travel: 180 Angle: No limit Voltage 4. 8 8. 4 Temp Rate: 15C~ +70C Weight: . 67oz 19g Dimension: (LWH) . 90 x . 50 x . 86 in (22. 9 x 12. 8 x 22 mm) Torque: 41oz @ 6. 0v; 48oz @ 7. 4v; 55oz @ 8. 4v Speed: . 11sec @ 6. 0v; . 09sec @ 7. 4v; . 08sec @ 8. 4v Spline: 25T Standard