This is the Hitec HS-5087MG Metal Gear Digital Micro Servo. FEATURES: High voltage version of the Hitec HS-5085MG servo Ideal steering servo for 1/16 scale vehicles, .15 - .40-size glow and electric aircraft and 500 size helicopters 3-pole ferrite motor Lightweight metal gears with top ball bearing Programmable digital circuit Two year limited warranty through Hitec beginning at date of purchase INCLUDES: Hitec HS-5087MG Servo 1.1" (29mm) Double Arm Servo 0.67" (17mm) Round Horn 0.90" (23mm) Four Point Horn Mounting Hardware SPECS: 6.0V 7.4V Speed: 0.17 sec at 60° 0.13 sec at 60° Torque: 50oz-in (3.6kg-cm) 60oz-in (4.3kg-cm) Size: 1.14 x 0.51 x 1.18" (29 x 13 x 30mm) Weight: 0.77oz (21.9g) jxs 12/27/11 ir/jxs