Universal kayak drain plugThe upper diameter is about 1.5''(4cm), the lower diameter is about 0.7''(2cm), and the height is about 1.5''( Cord length not included), fits 3/4 to 1-1/2 inch drain holes, compatible with most drain holes. Keep out the waterWith these scupper plugs, you'll never sit in the water again! It does a good job of plugging the drain holes, Keeping water from entering and wetting your kayak seat, keeping it dry. Durable materialCompared with the drain plug made of EVA, our high-quality silicone drain holes stopper bung is more stable and durable, and has strong resistance. Even through waves, it remains stable and won't fall easily. Drawstring designThe drawstring allows you to easily pull out the drain plug when you don't need it, which is labor-saving and convenient. Practical kayak hardwareSmall and strong, perfect for round hole shape drain holes, please measure your kayak drain hole specific size before choosing. NO MORE WET SEAT WHILE KAYAKING! Plugs universal fit scupper holes ranging from 1.5" to 0.7". Designed to keep water out of your sit-on-top kayak. Silicone materials, strong and durable. Lightweight and utility, easy to install in your kayak. Unique string design for you convenient to pull it down. It will help you stay dry while you are paddling.