|This super strong, flexible, pre-waxed braided beading thread is made from gel-spun polyethene, one of the strongest fibre cords per diameter. Most beads will not cut this product. It does not stretch, it knots easily, and will pass through a #12 beading needle. 0.15mm Dura-Line is the same diameter as 6lb FireLine. 0.12mm Dura-Line is the same diameter as 4lb FireLine.