Futaba BLS155 Brushless Super High-Torque/Speed ServoFEATURES:Mega-powerful but still fast digital servo with brushless motor, metal gearbox and two ballraces. Very powerful but still fast brushless digital servo for all applications where power and speed are needed. Ideal for swashplate servos on lafrge helicopters, as well for large models and jets.The casing centre piece is made from Aluminium and serves to cool the brushless motor. Identical in size to the BLS 352 Servo, however matched to suit the response times needed for helicopters and fixed wing models.The advantages of Brushless-Motor technology:30% faster Reaction time = better accelerationmore resistant to shock and vibrationhigher efficiency, lower heat generationno brush wear = 5 times motor lifeSpecial-Gearbox = no backlashSamarium-Cobalt magnetshigher resolutionsame current drain as normal digital servosINCLUDES:Futaba BLS155 Brushless Digital High Torque, High Speed Servo with Universal connectorSPECS:Torque: 4.8V: 14.4kg/cm, 6V: 18kg/cmSpeed: 4.8V: .18 sec, 6V .15 sec /60degDimensions: 40.6x20.3x36.8mm,Weight: 63g,