Gikfun DC 3V-6V 140 Motor 2000 RPM for DIY Electric Toy Car Ships Small Fan Arduino EK2153 Length: 25mm/ 0.98'' Diameter:21mm / 0.83'' Shaft Diameter:2mm / 0.08'' Shaft Length:9mm / 0.35'' Voltage:3-6V [Length] 25mm [Diameter] 21mm [Axis Diameter] 2mm [Axis Length] 9mm [Voltage] 3-6V It is perfect for mini fan,electric toys, remoto control cars, science experiments and etc Great for DIY and other creative project