Maxxon Outfitters Prime Premium Sink Tip Type IV Fly Fishing Line - Maxxon Outfitters sink tip line is a great option for going subsurface. This unique profile has a 12-foot sink tip which sets it apart from shorter options out there. The Flex-Cote coating makes it easy to pull out of the water and deliver the next cast on target. The tip section is a natural gray for keeping your line stealthy under water. IPS rating: 3.5 to 4.5 (Type 4). 12ft Sink Tip Section Machine Welded Forward-End Loop Slick Teflon Treated Flex-Cote Reduces Friction Low Coil Memory Low Stretch Braided Core True Grain Weight Calculated Using AFTMA Standards Rated for Cold to Moderately Warm Water Temperatures