This is the Ace DC1016MG Digital Micro Servo with Metal Gears. FEATURES: Two plastic and two metal output gears Single ball bearing supported output shaft INCLUDES: Ace DC1016 Digital Micro Servo with Four Point, Round and Double Arm Horns and Mounting Hardware SPECS: Torque: 22.2 oz/in (1.6 kg/cm) Speed: 0.10 sec/60° Dimensions: 0.87 x 0.44 x 0.93" (22.1 x 11.4 x 23.6mm) Weight: 0.39 oz (11 g) jxs 06/26/12 ir/jxs