An audio CD or CD-ROM that is cut into a non-round shape after it is pressed by the manufacturer or recorded on a CD-R. To avoid vibration in the drive, the shape is balanced as much as possible. Audio CD drives spin their discs more slowly than CD-ROM drives and can tolerate more out-of-round designs. Custom-cut CDs hold considerably less music, video or data than a full-size disc. They fit in standard drive trays, but do not work with the feed drives that are used in automobiles. See business card CD and feed drive.