Stay dry as you paddle on your next outdoor expedition with Shoreline Marine Propel Paddle Gear Kayak Scupper Stoppers. These durable stoppers fit into most scupper holes accommodating holes between 1¼ inches to 2 inches. Put the stoppers in place and remove with ease based on the specific conditions of your favorite lake river bay or wherever your next adventure takes you! Whether youâre an experienced kayaker or are just finding your stroke the Shoreline Marine design will help you to stay happy and dry.