Need to replace a leaky or broken air valve on your inflatable boat, kayak, raft, or paddle board? This universal PVC air valve is a great, affordable option. It's a simple three-part system: an inner plug, an outer body, and a valve cap, all made from durable PVC material. It features a double-seal design to help prevent annoying air leaks and ensure your inflatable stays firm. The outer diameter is about 2.5 inches at the top and 1.6 inches at the base, with a total height of around 2 inches. It's designed to be easy to use – just press to deflate and twist to open/close for inflation. It fits the standard valve holes on many popular inflatable watercraft. A crucial tip: after inflating, always make sure to tighten both the inner valve mechanism and the outer cap securely to lock in the air. A reliable spare part to keep in your repair kit for any inflatable adventure.