A fishing line is a cord used or made for angling. Important parameters of a fishing line are its length, material, and weight (thicker lines are more visible to fish). Factors that may determine what line an angler chooses for a given fishing environment include breaking strength, knot strength, UV resistance, castability, limpness, stretch, abrasion resistance, and visibility. Range:0. 40 - 4. 00 mm. / resins: pa 6, pa 6/66 co-polymer