ITEM NAME:Boat Marine Kayak Canoe Yacht Thru Hull Deck Drain Scupper 2" Heavy Duty Description: Drain plugs can be used to block your marine kayak drain holes. The product has a high quality sealing ring to prevent water from penetrating It will help you stay dry while paddling. Light weight, easy to carry, sturdy and durable. Easy to install and use. As a bridge, the drain is an choice for oxygen installation and bilge discharge. It is made of hard UV-resistant ABS plastic, which is excellent in impact resistance, heat resistance and corrosion resistance. Note: the drain can only be installed above the water line Specification: Large Circle Diameter: Approx. 90 mm/3.54 inch Hole Diameter: Approx. 50mm/1.97 inch Package Includes: 1 Set Boat Deck Drain Scupper( screw x4).1 Set Boat Deck Drain Scupper( screw x4). Drain plugs can be used to block your marine kayak drain holes. Note: the drain can only be installed above the water line. It will help you stay dry while paddling.