Scupper Plugs are an essential item for any kayaker who wants to enjoy the benefits of their sit-on-top kayak all year long, enabling more comfortable cold weather paddling or for anyone who just wants a drier ride. The Wilderness Systems Scupper Stopper fit all Wilderness Systems sit-on-top kayaks including all the Tarpon models and all the Ride models from 2007 through the current mdoel. These plugs will fit other sit-on-top kayaks with a scupper hole of 1" - 1-3/8". Sold in a package of 2.