The Bitcraze 4 x 7mm DC-Motor Pack for Crazyflie 2.X offers a set of four replacement brushed coreless DC-motors specifically designed for the Crazyflie 2.X series, excluding compatibility with the Crazyflie 2.1 Brushless model. These precision-engineered motors feature a 7.0 mm diameter, 16.0 mm length, and 3.5 mm shaft length, with a shaft diameter of 0.8 mm. Weighing just 2.7 grams each, they are equipped with a 32.0 mm wire length and a Molex picoblade 2P connector. Electrically, they operate at a Kv of 14,000 rpm/V, a rated voltage of 4.2 V, and a rated current of 1000mA, ensuring optimal performance for your Crazyflie 2.X drone. Ideal for those seeking reliable spare parts and accessories for their drone maintenance needs.