This is the Savox SW2210SG Standard 45kg 8.4V Metal Geared Waterproof HV Servo

Savox SW2210SG Waterproof Premium Brushless Digital Servo 0.11sec/500oz 7.4V

This waterproof, steel-geared servo is perfect for Monster Truck and most Scaler and Crawler applications where a slightly taller servo can be fitted. Precision steel gears, stump-pulling torque, and waterproof to IP67 standards (operates for up to 30 minutes in water up to 3 feet deep).

Features

• Center aluminum with nylon composite top and bottom case
• Operates directly on 7.4v without the need for an eternal BEC
• Precision ball bearings

Product Specifications

• Torque @6.0V - 26.0 kg/361 oz-in
• Torque @7.4v - 36.0 kg/500 oz-in
• Speed @6.0V - 0.14 sec/60 deg
• Speed @7.4v - 0.11 sec/60 deg
• Weight: 79g / 2.78oz
• Dimensions L x W x H mm: 40.6 x 20.7 x 42.0