TDK Life on Record DVD Quad Cases safely and securely store up to four discs. TDK DVD Quad Cases cut down on case clutter, making it easy to keep multiple disc sets together and organized. The release disc hub firmly holds the disc in place and enables quick, trouble-free removal when the disc is needed..By simply pushing the hub, you can release the disc without bending it. Consolidate your disc collection with TDK DVD Quad Cases.