Here's the high-performance Bass Pro Shops Tourney Tough monofilament fishing line designed to meet the standards tournament anglers demand. Copolymer construction and state-of-the-art extrusion techniques deliver superior fighting power, excellent knot strength and great handling characteristicsall with extra durability. 275 yards. High performance mono Copolymer construction State-of-the-art extrusion Excellent knot strength and durability