Vicious strikes need Vicious quality to stand up to them. Vicious Ultimate handles them all. Our Advanced Copolymer Technology (A.C.T.) will stand the test of time. Built with high tensile strength, very low stretch, superior knot strength, superior castibility and ultimate impact characteristics make this line top-notch by any standard. Whether your after slab crappie or fish heavy cover for big bass, Vicious is the line for you.