Savox SC-1251MG Be Coreless Motor Metal Gear Torque(@6v): 125.0 oz-in Speedboat): 0.09 sec/60 Dimension lxwxh(mm): 10.3x20. 2x25. 4; weighted): 44.5 Sleek new unique black design with laser etching and a shorter 200mm black shielded wire lead make these servos standout! Coreless motor driven, Nominal operating voltage 4.8-6.0V Drivetrain: metal gear; Spline: 25T; bearing: 2BB; case: anodized aluminum body Ideal as a steering servo for 1/10 surface applications and in gliders and airplanes that have thin wing profiles