2.3-Gram Performance Linear Long Throw ServoKey Features Long throw offset servo is perfect for controlling ailerons on ultra micro models Offset provides for built in differential JST SHR Connector Overview The 2. 3 gram Linear Long Throw Offset Servo is a special use servo designed for modelers without computer transmitters who would like to add aileron differential to their ultra micro aircraft. It comes programmed with a 70 30 offset from center and can be used with any Spektrum AR6400