By the end of the 1980s, -inch disks had been superseded by -inch disks. During this time, PCs frequently came equipped with drives of both sizes. By the mid-1990s, -inch drives had virtually disappeared, as the -inch disk became the predominant floppy disk. The advantages of the -inch disk were its higher capacity, its smaller physical size, and its rigid case which provided better protection from dirt and other environmental risks. If a person touches the exposed disk surface of a -inch disk through the drive hole, fingerprints may foul the disk—and later the disk drive head if the disk is subsequently loaded into a drive—and it is also easily possible to damage a disk of this type by folding or creasing it, usually rendering it at least partly unreadable. However, largely due to its simpler construction (with no metal parts) the -inch disk unit price was lower throughout its history, usually in the range of a third to a half that of a -inch disk.