This is the Savox SV-1273TG Plus Ultra Speed High Voltage Titanium Gear Digital Servo

"Plus" series servos feature Soft Start and Sanwa SSR compatibility.

Features:

• Super strong, precision made titanium gears provide durability that will survive heavy use.
• Capable of HV operation.
• Ideal for 1/10 buggies and some heli applications

Specifications:

• Torque @ 7.4V - 20.0kg/277.7oz-in
• Torque @ 8.4V - 25.0kg/347.2oz-in
• Speed @ 7.4V - 0.065 sec/60 deg
• Speed @ 8.4V - 0.055 sec/60 deg
• Dimensions L x W x H (mm): 40.3 x 20.2 x 37.2
• Weight: 64.0g