This is the E-Flite 7.5g Sub-Micro S75 Servo.
Features:
Specs:
Size Category: Minis and Micros
Type: Analog
Torque: 17.2 oz-in (1.17 kg-cm) @ 4.8V
Speed: .12 sec/60 degrees @ 4.8V
Length: 0.90 in (23mm)
Width: 0.45 in (12mm)
Height: 0.94 in (24mm)
Weight: 0.26 oz (7.5g)
Bushing Or Bearing: Bushing
Motor Type: Coreless
Connector Type: Universal
Gear Type: Nylon
Application: Electric slow flyer to park flyer 3D airplanes, micro to mini electric helicopters and 1/18-scale on-road and off-road vehicles
Voltage: 4.8—5.3V DC