Fireline is a pre-waxed, braided cord consisting of gel-spun polyethylene
which is known as the strongest fiber, per diameter, ever created.
It has an unbelievably high tensile strength and has been recommended in numerous
how-to articles on beadworking.
The 4 lb fits a #12 English beading needle.
The 6 lb. fits a #10 English beading needle.
Size: 2 LB 0.003" (0.0762mm)
4LB 0.005" (0.127mm)
6LB 0.006" (0.153mm)
8 LB 0.007" (0.178mm)
10 LB 0.008" (0.203mm)
14LB 0.009" (0.229mm)