Inquiry (采购产品): Query Please send us an email message, so we can send you a query for quote on fabrication of polycarbonate disks with internal holes. Material thickness is 1/16" and 3/32". ODs are 3.5" and 7". PDF technical drawings will be supplied. CAD files available upon request. **** Hidden Message ***** Mike Roberts 96738 USA Company: Metavation.com E-mail: mike@metavation.com **** Hidden Message ***** mike@metavation.com