Wire Stringer - Clear, 5 pieces This tool is used to keep caught fish alive. Pass the wire through the gill cover and mouth, loop it, and secure it with a branch hanger, etc. Stainless steel wire: 1.5mm Polyurethane tube: Outer diameter 4mm *Branch hanger not included in the contents. This is a handmade product. There may be some variations. Please understand this before purchasing. For bottom fish, rock fish, striped beakfish For pelagic fish, other lure fishing For freediving, spearfishing, etc.