This is Brand New JX DC5821LV Waterproof Digital 21KG Metal Gear Servo .

Idea For 1/10 & 1/8 Surface Use .

Features:
- High performance digital servo
- High-precision aluminium gears with hard anodizing
- CNC aluminium middle Shel
- Dual ball bearings

Specifications:

Speed @4.8V: 0.18 sec

Speed @6.0V: 0.16 sec

Torque @4.8V: 229 oz/in

Torque @6.0V: 303 oz/in

Dimensions: (LxWxH) 40.5x20.2x38mm

Gears: Metal

Type: Digital

Input Voltage: 4.8V-6.0V

Output Shaft: 25T spline

Ship from US , Thanks For Looking .