Izorline First String Monofilament is the toughest, low stretching, low memory line on the market. Used to fill the base of you fishing reel spool. Easy to tie, the Izorline First String Monofilament produces superior knot strength and posses abrasion resistant qualities that make it extremely durable. Offered at a price point that’s easy on the billfold, the Izorline First String Monofilament is a great deal anyway you cut it.