The Korda Sinking Rig Tube has been designed to quickly sink to the bottom and disappear. The Tube has a 0.75mm bore, making it easy to thread and a smooth matt finish in four colours to match the lake bed. The Rig tubing stops the hook link from wrapping around the main line when casting, preventing tangles, it also acts as a barrier between the fish and line when fighting and landing, a vital safety aspect which should not be ignored.