Description: 100% Brand new and high quality Power saving, outstanding engine efficiency Suitable for car models, boat models and tank models, also a great replacement for micro hand drill Weight: approx. 211g/0.47lb Material: Metal Specification: Rated voltage: DC 6-24V Speed parameters: 6V---3600RPM; 980mAh current; 1800mAh turn blocking 12V---11000RPM; 1260mAh current; 2720mAh turn blocking Size Chart: Total length: approx. 57mm Diameter: approx. 37mm Flange diameter: approx. 13mm Flange height: approx. 4.2mm Shaft length: approx. 9mm Shaft diameter: approx. 3.17mm Fixed hole: M3 Mounting hole distance: approx. 25mm Package Includes: 1 Piece 550 Electric Motor