There were even business card sized and shaped ones. I remember an article in a computer magazine which warned against using them in the brand new generation of quad speed drives because the unbalanced mass would ruin your expensive CD-ROM drive.

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrOMTr...

We had them in the US too.

Tray-based CD players had a separate, smaller, indent of about 2.5" (6.35cm :) diameter which would accept them.

a) so much for the metric system :P

b) How does that have a 12 inch extended remix and a 12 inch club mix if it's only a 3 inch CD? Magic!

c) I love how the packaging makes the small cute cd single big again. Kind of like the longboxes for full length CDs, before jewel cases dominated.

Being an electronic music fan in the Canadian prairies in the 1990s made for some really bizarre sentences. You could drive 250 kilometres to pick up the new Stickman 12 inch. Stickman was a house label out of Toronto.

Or you would pay an obscene amount of money for a 12 inch from Germany because you really wanted the 7 inch remix on the B side.