This is the Ace RC DS1903 MG Metal Gear Digital Servo. FEATURES: Ideal for use in 1/10 and 1/8 scale applications INCLUDES: Servo with 1.53" (39mm) 4 Point Horn, 1.6" (41mm) Double Arm Horn Horn Screw, four each, Mounting Screws, Grommets and Eyelets SPECS: Torque: 41.7 oz-in (3 kg-cm) Speed: 0.19 sec/60° Dimensions: 1.6 x 0.79 x 1.4" (40.9 x 20mm x 36.1mm) Weight: 0.84oz (23.8g) jxs 11/21/12 ir/jxs