4mm Mini Micro DC 3V 60000RPM high Speed Hollow Cup Coreless Motor RC DroneDescription:100Percent new and high qualityMotor diameter: 4 mm, Motor length: 12 mm (does not contain bearing sets)Output shaft: 0.7 mm, Output shaft length: 4 mmVoltage: 3.7 V, Current: 0.04 A, Speed: 60000 RPM, Length: about 170 mmColor: As picture showsWeight: 2gQuantity: 5PcsNote:Light shooting and different displays may causethe color of the item in the picture a little different from the real thing.The measurement allowed error is+/13cm.We highly appreciate all custome rsopinions to improvethe selling, also if anything you unsatisfied, please contact us for probable best solution. Thank you!Package Included:5Pcs 4mm Mini Micro DC 3V 60000RPM high Speed Hollow Cup Coreless Motor RC Drone(If there are any problems with the product, please send us pictures.Tell us more details about this problem)