HB（hummingbird)drone arm set (motor, ESC, propeller) is not sold separately as it is an integrated combo with the FOC ESC included. Each rotor provides a continuous thrust of 110kg（242.5bL） and has a maximum power output of and has a maximum power output of 55 KW, equivalent to 74 hp. The combo is specifically designed for large multi-rotor/e-VTOL drones capable of carrying heavy loads, flying car, delivery drone, urban mobility.