Mini metal gears, can be shockproof, low noise, stable performance. This model can be compliant with most standard receiver connector. Great for truck, boat, racing car, helicopter and airplane, robot, vehicles and toys. Features - Color: Black. - Material: Plastic. - Size: 2.28 x 1.22 x 2.85cm/ 0.90 x 0.48 x 1.12 inch. - Operating temperature: 0 degree centigrade-55 degree centigrade. - Rotation angle: 90 degrees. - Operating voltage: 4.8V. - Compliant with most standard receiver connector mini RC car. Compliant with most standard receiver connector RC robot kit. - The product fit for various toys, small and medium electric model airplanes and models. - Gear micro motor for robot plane helicopter boat car horns remote controlled aircraft for DIY. - Gear micro motor is tiny and lightweight with high output power. - Full , it's better for accuracy, service life has been greatly increased. Package list: 10 x micro motors