Voltage: 1 - 2 sTest Data of 1811-2000KV:No-load Current: 0.4A / 7.4VMax Power: 38 WVoltage: 2S, Prop: 7 x 3.5, Current: 4.1A, , Thrust: 165gVoltage: 2S, Prop: 6 x 3, Current: 3.4A, , Thrust: 150gVoltage: 2S, Prop: 5 x 4.5, Current: 4.0A, , Thrust: 135gColour:SilverMaterial:metalSize:18 x 18 x 30mmMotor Diameter: 17.5 mmMotor Length: 21.8 mmTotal Length: 29.8 mmShaft Diameter: 2.0 mmPackage Contents:2 x 10 grams 1811 motor2 x 2.0mm prop adaptor2 x prop saver with rubber O ring2 x hex wrenchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.