Trilene Big Cat is a super-tough monofilament that can go down where the sun don't shine and bring 'em to the light. Casts a mile; super strong, abrasion resistant, shock absorbent and easy to see. For big-time catfish fishing power, there's never been anything like Trilene Big Cat. Length: 20 lb. test - 330 yd., 30 lb. test - 275 yd., 40 lb. test - 220 yd..