We supply you three spools of invisible thread in each packet, with each spool containing over six feet of the thread.
This is more than ample for any use, as in most applications one hardly uses more than two or three feet of the thread. Because it is so light and invisible, it is better to have three spools of six feet each, than one spool of 18 feet, where if the thread tangles, everything is gone. We also supply an instruction sheet in each packet detailing how you should handle the thread, and basic ideas of how it can be used.