Amount of package: you will receive 16 pieces kayak drain plugs, easier to use and operate, and the quantity is enough for your daily use, replacement and sharing Reliable material: made of Silica gelfor long lasting use, water resistant, the scupper plugs are easy to install in your kayak, no need to worry about getting rotted when soaking in water Proper size: the kayak drain plug fits for 1/2 inch opening; The length measures 1.25 inch and is 0. inch in diameter, fitting kayak scupper hole ranging from 1/2 inch; No need to make the hole bigger, you can put some hand soap on the plug and it will be installed Function effect: the boat scupper plug can stop water infiltration, drain the water out of the inner hull of your boat, helpful to stay dry while you are paddling, practical and helpful in your daily use Fits most kayak: the drain plug fits most kayaks,canoes, pedal boats and so on, widely applied in these vehicles, compatible with sundolphin kayak, Aruba 8 SS, Aruba 10, Bali 8, sportsman 8, sportsman 10, sun slider and so on weightabout7g/pcsThe total weight is about 172g