4X Emax ES9251 2.5g Plastic Micro Digital Servo For RC ModelDescription:Brand:EmaxItem:ES9251 Digital ServoOperating Voltage:4.5V~6.0VStandard direction:Counter Clockwise/Pulse Traveling 1500~1900usecStall torque(4.8V): 0.27Kgf.cmOperating speed(4.8V): 0.08 Sec/60at no loadDimension:18.02x7.91x16.8mmRecomended Plug type:FUT,JRMaterial:PlasticsWeight: 2.5gUsage:For RC Airplane,RC Aircraft,RC Glider, RC HelicopterPackage Included:4 x ES9251 Digital Servo