Nsdrc RS500B High Performance Budget Servo Our budget minded servo that's still packed with performance as usual! Stronger, faster, and more durable than others in its class!! Direct power, 8.4v - 16.8v capable, no extra wiring and costs of a bec in order to get full power. Hardened stainless steel gears, with steel post caps in the top composite case. The top case is a hardened composite, with aluminum middle and bottom case! Torque / Speed specs 8.4v - 310oz/ 22kg @ .15 12.6v - 430oz/ 31kg @ .12 16.8v - 520oz/ 38kg @ .09 • Direct power 8.4v - 16.8v • 25T Spline • Composite top case with cnc aluminum middle and bottom case. • Weight 68g •Wire Length: 300mm • Water resistant, 7 point O-ring seals, full conformal coated internals. Still not recommended to Submarine... • Hardened stainless steel gears ?We highly recommend using direct solder connections for best results. ?The power connection plug, or power switch on your esc, MUST be disconnected/ turned off when not in use to prevent damage to the servo and/or battery!