Reefs RC Raw 500HD High Torque/Speed Digital Servo (High Voltage)This is a Reefs RC Raw 500HD High Torque, Speed and Voltage Digital Servo, intended for use with applications requiring a waterproof servo. This servo features a seven point waterproof seal to ensure function no matter the conditions. The internals are steel gears, all inside a CNC raw aluminum casing with a clear oxidation. Features: Waterproof design CNC Raw Aluminum Programmable with the Reefs Link (SEHREEFS64 Sold Separately) Steel internal gears