A great sinking line for freshwater or saltwater. The t-series is perfect when getting the fly down quickly is mandatory. These lines have a 24 foot long sinking head and a small diameter floating running line. It is the next best thing to using a shooting head and monofilament running line we've found. The soft running line works well in colder water conditions. We've found that the T-200 is perfect for 7-8 line rods.