Power 46 Brushless Outrunner Motor, 670KvKey Features Equivalent to 40 to 46 size glow engine for planes weighing 47 lb (1. 83. 2 kg) Ideal for 25 to 40 size 3D airplanes up to 5 lb (2. 2 kg) Ideal for models requiring up to 925 watts of power High torque, direct drive alternative to inrunner brushless motors Includes mount, prop adapters and mounting hardware External rotor design6mm shaft can easily be reversed for alternative motor installations Slotted 14 pole outrunner design High