In smelt fishing, a high performance line that can smoothly complete a series of actions of dropping & rArr; inviting & rArr; winding up, and also having the toughness to withstand the ups and downs of countless gimmicks is essential. By using "special string made exclusively for smelt" for ultra-strong and wear-resistant RD yarn, the risk of guide freezing & break due to embracing water in the midwinter, which is peculiar to the PE line, is greatly reduced. At the same time, overwhelming drainage was possible. In addition, HST processing is applied to achieve ultra-low elongation in order to reliably capture sensitive fish. It also contributes to outstanding operability, and can be used in all situations such as on ice and boats without trouble. It is a super weapon for catching public fish that complies with domestic thread diameter standards.