Savox 0.17/555.5 High Voltage Servo (1/5 Scale) Combines leading edge technology with super high 12 bit (4096) resolution and unique steel gears Super light-weight for setups where every ounce counts High speed, incredible efficiency, and low power consumption Extremely strong metal steel gears ensure long-life and durability The full aluminum case design not only looks good but also allows for cooler and smoother operating temps