Hi Eric, Good day to you ! I found you through internet google under TDX FORMAT TAPES. These tapes are use for Production Test Program using Sentry Tester. Can I help you? What are going to do with these Tapes? I maybe able to help you. We are specialized in providing service to our Customers to repair/service Sentry Testers and as well as software development. Regards, Jimmy Lim CHERTEC SEMICONDUCTOR SERVICES Tel: +65-67491633 Fax: +65-67478429 21 Apr.2009