The Universal Kayak Scupper Plug is made of solid silicone, which is durable and can be soaked in water for a long time. Never rot. Package Comes with a total of 8 pieces of universal kayak scupper plugs, each is equipped with a lanyard, easier to use and operate, sufficient quantity can meet your daily needs and replacement. Just gently squeeze the stopper into the hole until it is fixed so that it cannot be pulled out gently by hand easily. When you are not using it, you can use the nylon strap on the rubber stopper to pull it out, which is very convenient. Suitable for Hobie, Ocean Kayak, Native, Old Town, and all other major brands. Suitable for 18mm to 38mm scuppers/scupper holes. Product size: 20*40mm Tapered design, suitable for 18-38mm hole sealing plug Material: silicone Color include: black, blue, orange, green Weight: 35g/pc Package includes: 8pcs * silicone hole plug