FIRELINE in COLORS! One 50 yard Spool of HYACINTH color FIRELINE beading thread, 6lb test strength. This is the approximate equivalent of a "size D" beading thread. Please Note: Any beading thread (including Fireline) may abrade (weaken) at the place where it goes through your needle. To best protect the integrity of your thread, it is recommended that you place your needle an inch or two from the end of your working thread and attach a new thread (as needed) before reaching this point. Cut the end off where it went through your needle. Color added to Fireline after market. Because of the large amount of line on the spool, the color may appear darker in the photo than it will be as a single thread. More colors coming soon!