K-Power DMM-150 Digital, Metal Gear High-Torque Servo, Waterproof Specifications: Speed @4.8V: 0.15 sec  Speed @6.0V: 0.13 sec  Torque @4.8V: 215 oz/in  Torque @6.0V: 226 oz/in  Dimensions: (LxWxH) 40x20x39mm  Bearing: Dual ball bearing  Gears: Metal  Motor: Digital  Input Voltage: 4.8V-6.0V  Output Shaft: 25T spline  Wire Harness Length: 305mm (from case to end of plug)