2.2g Linear Servo High-Torque w/servo mountKey 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