ITEM NAME:Durable Inflatable Boat Mattress Spiral Air Valve Plugs Replacement Black Description: High quality plastic material, sturdy, anti-corrosion and durable. Fits most inflatable boat, kayak, raft, rubber dinghy, etc. It will fit into a hole that is about 7/8" in diameter, and has a threaded cap. The valve cap design ensures anti-leak inflation. Easy to install and replace. Specification: Material: Plastic Color: Black, White (optional) Height: Approx. 50mm / 1.97 inch Thread Diameter: Approx. 22 mm / 0.86 inch Package Includes: 1 Piece Air Valve.Fits most inflatable boat, kayak, raft, rubber dinghy, etc. The valve cap design ensures anti-leak inflation. 1 Piece Air Valve. High quality plastic material, sturdy, anti-corrosion and durable. Color: Black, White (optional).