"DOUBLE-SIDED BLACK" High-Performance CD-R"s! The NEW Premium, Professional Grade 80 Minute DOUBLE-SIDED BLACK CD-R Media are capable of record speeds from 1X to 48X. * The world"s first DOUBLE-SIDED BLACK CD-R media! Bottom (record side) of the cd-r is BLACK, while top (label side) is BLACK, too! Both sides of the cd-r are black! Note that the apparent color of the top and bottom of the cd-r will not be identical, due to the inherent nature of each surface. * These cd-r"s look great! Bring the black cd-r concept to a new level! These cd-r"s are real "eye-catcher"s" when used for sending out music, software demos, samples or making backups! * ****Important Note****: Please note that "double-sided" refers to both sides being colored, NOT both sides being recordable. Additionally, a very small percentage of MAC computer"s recorders will fail to be able to read/write to any Colored/Black recording surface. * 2 x 50-Pak = 100-Pak. Advanced "DOUBLE-SIDED BLACK" composition! Uses an advanced, Phthalocyanine dye (comparable to Mitsui branded cdr"s).