Hacker A40-10S 14-Pole V2.1This A40 series motors are designed for 3D Aerobatic up to 6 pounds and Scale models up to 8,8 pounds using 3 to 6 series LiPoly batteries. The 14 pole Outrunnermotor type design creates MASSIVE TORQUE, therefore larger direct drive props can be used without the need for a gearbox. This motor features Oversize bearings, Curved Neo magnets and High efficiency stator design. Backmount, Prop adapter and all screws are included.