... South poles. The educational magnet meet USA safety standard Alnico educational Magnet:Our Educational magnet meet the requriement of ... to USA, CANADA for many years.The Alnico magnets can be painted with red-blue, red-green , red-silver color , ... non toxice painting.The specification :20*10*5mm, 40*12.5*5mm,60*10*5mm,60*15*5mm,60*15*10mm ... ,60*12*5mm,50*10*5mm,70*12*5mm,75*10*5mm,75*11.2*6mm,100* ...