Voltage: 1 - of 1811-2000KV:No-load Current: 0.4A / 7.4V Max Power: 38 W Voltage: 2S, Prop: 7*3.5, Current: 4.1A, , Thrust: 165g Voltage: 2S, Prop: 6*3, Current: 3.4A, , Thrust: 150g Voltage: 2S, Prop: 5*4.5, Current: 4.0A, , Thrust: 135g Colour:Silver Material:metal Size:18*18*30mm Motor Diameter: 17.5 mm Motor Length: 21.8 mm Total Length: 29.8 mm Shaft Diameter: 2.0 mm Package Contents: 1* 10 grams 1811 motor 1* 2.0mm prop adaptor 1* prop saver with rubber O ring 1* hex wrench Only the above package content, other products are not included. Note: Light reflection 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.