This is the Spektrum 2.3-Gram Linear Long Throw Offset Servo. This 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-series receiver.c

Specifications:

• Type: Analog
• Application: Ultra micro aircraft
• Torque: 3.5 oz (100 g)
• Speed: 0.10 sec end-to-end
• Length: 0.87 in (22.0mm)
• Width: 0.66 in (16.9mm)
• Height: 0.33 in (8.2mm)
• Weight: 0.1 oz (2.3 g)
• Bushing or Bearing: Bearing
• Bearing: Single
• Connector Type: JST-SHR (1.0 mm)
• Voltage: 3.2V-4.2V