This is a 300m spool of PE line, size 1. It has high strength and low stretch, allowing you to reliably catch bites when fishing for rockfish like Akou and Oomonhata, as well as for seabass and black bass. Size 1, 18lb, 300m * Color-coded every 10m in 5 colors. It has approximately the same strength as size 4 fluorocarbon line. This product offers good cost performance compared to domestic products. Please check the actual product photos before purchasing.