One (not 2) aluminum rotor for 4 DualPole Mini motor
or Assembled 4 Dualpole Mini motor
. Rotor now is over 0.55" thick (no thru hole) slotted with 8 1/2" x 1/2" magnets (that pull 28 lbs). They have two setscrews in rotor. There is no need for a hub. Comes with one rotor, 8 neo magnets pressed in, 2 set screws for attaching to 3/8" shaft, one allen wretch for the set screws, and two shaft spacers for a gap.