The Power HD LW-20MG is the latest servo that features an all-aluminum case, copper and aluminum gears, a powerful coreless motor and it pulls up to 20kg-cm of torque at a speed of 0.16s. The standard sized servo is also waterproof making this a great servo for crawlers, 1/8 scale trucks and buggies. It comes black anodized and with laser-etched graphics.

Features: 
High speed / high torque 4.8-6.6v waterproof servo
Suitable for scale Crawlers and 1/8 scale buggies and trucks 
All aluminum housing for excellent durability
Heat resistant coreless motor

Specs:
Torque(4.8V): 16.5 kg-cm (229.1 oz/in)
Torque(6.6V): 20.0 kg-cm (277.7 oz/in)
Speed: 0.18 sec (4.8V) ? 0.16 sec (6.6V)
Operating Voltage: 4.8 ~ 6.6 DC Volts
Weight: 60g (2.12 oz)
Bearing Type: Ball Bearing x 2
Motor Type: DC Motor
Gear Type: Copper & Aluminum
Gear Type: Digital
Motor: Coreless
Operating Temperature: -20?~60?
Working frequency: 1520s / 333hz
Size: 40.7x20.5x39.5mm (1.60x0.80x1.55 in)
Spline: 25