The mini CD single (also 3-inch CD or CD3 in the US, in relation to the CD5, or the 5-inch CD single; commonly known as "snap-pack"; also known as "CD Single") is a music single released on a mini Compact Disc that measures 8 cm (3.1 in) in diameter, rather than the standard 12 cm (4.7 in). They are manufactured using the same methods as standard full-size CDs, and can be played in most standard audio CD players and CD-ROM disc drives.