Besides being the industry standard for performance and reliability, Maxell floppy disks offer technological advances for improved data protection. Maxell 3.5" disk features include the patented Dual-Interlocking Flex Shutter , a self-cleaning, multi-layer disk liner to keep the magnetic surface clean and error free, an innovative multi-binding system to help extend laptop battery life and a disk shell that withstands extreme conditions even at temperatures as high as 140 degree F. NOTE: THIS PRODUCT CANNOT BE SHIPPED TO MASSACHUSETTS OR DISTRICT OF COLUMBIA (WASHINGTON, D.C.) WARNING: The solder used in this product contains lead, a chemical known to the State of California to cause birth defects and other reproductive harm. Please wash hands after handling internal components and circuit boards and avoid inhalation of fumes if heating the solder.