Inquiry (采购产品): Magnetic disc Can you supply a very strong permanent magnet in the shape of an 18" diameter, 4" thick disc? Would like for N and S poles to be separated by a 4" by 4" non-magnetic bar. 2" center hole. Must rotate 3000 rpms. Price of 4? of 6? Metal? Delivery? Thank you. J. **** Hidden Message ***** John Gioiello 9230 Lake Forest Dr. xxx Youngstown, FL32466 USA Company: n/a Title: n/a Phone: 850-722-6216 Fax: N/a E-mail: jovig@bellsouth.net **** Hidden Message ***** jovig@bellsouth.net