This is the S6250 High Torque, HV Digital Servo by Spektrum.
Features:
Tech Specs:
Size Category: Standard
Application: 1/10 Buggy, Truck, 1/8 Buggy, Truck
Length: 1.61 (41mm)
Width: 0.82 (20.9mm)
Height: 1.25 (31.8mm)
Weight: 2.3oz (65.2g)
Current Draw Idle: 9.8mA @ 6V
Current Draw Stall: 4900mA @ 6V
Voltage: 6.0-8.4V