The BrotherHobby VY 1507 1900Kv is a powerful motor designed for 4" freestyle drones running on 6S batteries or ultralight 5" drones with 4S batteries. The motor is made from durable 7075 aluminum alloy, equipped with curved N52H magnets and high-quality Japanese NSK 5x2x2.5 mm bearings. With a 16 cm 24AWG cable, the motor weighs only 16 grams. It uses a standard 5 mm shaft.