Speaker Magnet Ferrite ring shape,Y25,Y30CE,with CE,ROHS certificates. Ferrite Magnet in Y25 or Y30with different size as below: ø100*ø32*20 ø145*ø75*20 ø100*ø60*15 ø70*ø32*15 ø70*ø32*10 ø156*ø80*20 ø45*ø19*8 ø60*ø32*10 ø45*ø22*8 ø35*ø18*7Factory photosWith CE,ROHS etc certificates to supply good quality Ring ferrite magnet in Y25,Y30