a unit including a plurality of {HEAD ~ magnets} supported on a yoke, the unit including {TAIL ~ a molding support region}; and 
a unit including a plurality of { HEAD ~ magnets } supported on a yoke , the unit including { TAIL ~ a molding support region } ; and
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH