Ande Monster Monofilament is an extra strong monofilament - in fact it is the strongest monofilament Ande has ever produced. Monster Monofilament is for trolling and for targeting large, mean fish. It is a hard line with outstanding knot strength and abrasion resistance. It is a one-purpose line and that is to land large fish like Tuna, Sailfish, Marlin and Sharks. ANDE Monster - nothing stronger!