This is a Savox SB-2265MG Black Edition Low Profile Brushless Metal Gear Servo.

Features:

• Metal gear train ensures durability under harsh situations.
• Ideal for 1/10 on road cars requiring a high speed servo
• Servo Type / Size: Low Profile
• Application: 1/10 Cars
• Motor Type: Brushless
• Gear Material: Steel

Specifications:

Input Voltage: 7.4v
Torque: @ 7.4v - 12.0kg/166.6oz-in
Speed: @ 7.4v - 0.08 sec/60 deg
Dimensions (LxWxH): 40.8 x 20.2 x 25.4mm
Weight: 57.0g
Spline size: 25T