This is the Savox SW-0250MG Waterproof Metal Gear Micro Servo. This servo boasts great speed and torque specs, along with waterproof capabilities, dual ball bearings and full metal gears. This servo is a great addition to any Traxxas 1/16 scale vehicle.

Specifications: Dimensions: 29.5x14x32.5mm Weight: 25g Speed @6.0V: 0.11 sec/60 Torque @6.0V: 69.4 oz-in (5.0 kg-cm) Gear: Metal Bearing: 2BB Case: Plastic Tooth Spline: 21