A new high-speed, digital servo for use in both aircraft & helicopters where the torque of 6.6 Kg/cm is sufficient, but speed & holding power are a greater priority. Twin ball races & metal gears are standard. Specification Weight: 56g Dimensions: 39.2 x 20 x 34mm Speed: 0.13 sec/60° (6.0v) Torque: 14.8 Kg/cm (4.8v) Manufacturer: Ripmax Model: SDX-771 Digital Servo (P-SWDSDX771)