Packaging includes:4 x Push-in kayak drain plug easier to use and operate, sufficient quantity can meet your daily needs and replacementFits 1/2" Opening ~ Length: 1.25" ~ Diameter: 1/2", fit kayak scupper hole ranging from 1/2". Didn’t have to make the hole bigger at all. Just put some hand soap on the plug and it squeezed right inFITS MOST KAYAK : the drain plug fits most kayaks,canoes, pedal boats and so on, campatible with sundolphin kayak, Aruba 8 SS, Aruba 10, Bali 8, sportsman 8, sportsman 10, pedal boats 3-seater, 5-seater,sun slider and so on. Also fits other Pedal Boats as wellDurable to use: the scupper plugs are made of neoprene rubber material, which is sturdy and durable enough for your applying, no worry about getting rotted when soaking in water