The RYUGI Wire Caro Swivel wire is carefully selected and has a thin, notched line. When it leaves the weed, it cuts through like a thread saw, creating a light "weed loss" feeling. This sharp swing-out of a heavy sinker puts a heavy load on the entire rig. If the wire's sleeve stopper is weak during the cast and should come off, the sinker will fly in an unexpected direction, which is extremely dangerous. For this reason, we have adopted a high-strength industrial press that can secure stable strength instead of handling that causes uneven strength. It has a tough design.