Amazon.com: Sony 3DMR60DSR1HC 3-Pack 8cm DVD-R Double Sided with Hangtab : Electronics
File:DVD-RW Spindle.jpg - Wikimedia Commons
What are DVD-R discs? An explanation of how DVD-Rs work and their specifications
Amazon.com: Maxell 638006 DVD-R 4.7 Gb Spindle with 2 Hour Recording Time and Superior Recording Layer Technology with 100 Year Archival Life : Electronics