3.5inch Rewritable Magneto Optical Disk - 540MB 512 Bytes/Sector Pack Size: 1 Minimum Bulk Purchase: 10 x 1 packs (10 disks) Get maximum performance and meet the demands of any operating environment with Verbatim 3.5inch Rewritable (MO) Optical Disks. Certified 100 percent error-free, they exhibit the lowest byte error rate in the industry! They are available in 128MB, 230MB, 540MB and 640MB capacities, compatible with DOS and MAC optical formats, and are backed with Verbatim's Lifetime Warranty. Verbatim 3.5inch Rewritable Optical Disks are ideal for graphics, desktop publishing, medical imaging, multimedia creations, routine systems backup and more. These high capacity disks feature a hard-coated, wear-resistant media surface for long-lasting dependability. Their superior cartridge case design safeguards data integrity. And, they meet or exceed ISO and other applicable industry standards! Verbatim 3.5inch Rewritable Optical Disks are compatible with all ISO Standard 3.5inch high capacity optical drives including Mitsubishi, Sony, Fujitsu, IBM, Olympus, Panasonic and Pinnacle Micro. Weight: 4.00 Kg