P-Line C21 Copolymer Fishing Line is constructed with Japanese raw materials and technology. The ultimate goal of P-Line’s engineers was to create a line that bridged the gap between two of their most popular lines - CX-Premium and CXX-Xtra Strong, while maintaining a great price point. By blending two different types of nylon into one line, P-Line was able to provide C21 with a soft construction for excellent castability. It literally flies off the reel with virtually no memory. Great for spinning or casting reels, P-Line C21 Copolymer Fishing Line does it all without putting a big dent in your wallet.