Check the listing for details. Beading Thread FireLine Smoke FLSGM3PK mini spool pk: 4lb, 6lb, 8lb 15yd each. Color: Smoke, Condition: New. Listed at 18.99 USD. Fireline® is a micro-fused, braided bead thread consisting of Dyneema®, a 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 bead-working. The 4lb & 6lb tests will can be used with a #12 English beading needle and 8lb test can be used with a #10 English beading needle. Variety packs include one 15 yard spool each of 4lb, 6lb & 8lb strength of smoke. We highly recommend any ThreadZap® thread burning tools for cutting this thread. 4lb test, .005" diameter = Nymo size B 6lb test, .006" diameter = Nymo size D8lb test, .007" diameter = Nymo size F PLEASE NOTE: Opened spools (regardless of whether or not they've been cut/used) are not eligible to be returned, except in cases where the cord is damaged/defective.